Jim Carrey and Cathriona White 'looked really happy' on their final date together

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Jim Carrey and Cathriona White's Last Romantic Date -- See the Photos

Cathriona White and Jim Carrey were in high spirits on what may have been their final date before she was found dead in an apparent suicide.

A source tells ET the two looked smitten as they gazed adoringly at each other, hugged and kissed on a secluded balcony table overlooking the ocean at Nobu restaurant in Malibu, California, on Sept. 19," where they spent about two hours.

WATCH: Jim Carrey and Late Girlfriend Cathriona White -- A Timeline of Their Relationship Over the Last 3 Years

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According to the source, Carrey and White constantly looked into each other's eyes, both initiating PDA throughout the night.

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WATCH: Cathriona White's Final Note Includes Jim Carrey's Name, Pills Found by Her Bed, Says Coroner

"They looked really happy together," another onlooker tells ET, saying the actor and photographer seemed to be sharing "a very romantic meal."

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WATCH: Jim Carrey Spotted Out 4 Days Before Late Girlfriend Cathriona White's Death

Cathriona shared two photos from the evening. "Before going for a wonderful belated birthday dinner at Nobu in Malibu last night," she captioned her selfie. She also shared a picture of the iconic Nobu menu.

#sushi #nobu #birthday #sunsets #food #california #malibu 😋

A photo posted by Cat white (@littleirishcat) on

Nine days later, White was found dead in her home on Monday night, Carrey reportedly visited with her sister on late Wednesday night. The 53-year-old actor was seen publicly for the first time since White's death on Thursday afternoon, when he was being driven en route to his Los Angeles, California home.

"Jim is doing everything he can to help," a source tells People of Carrey helping White's family during this difficult time. "He is devastated, but can't imagine how her family must feel."

WATCH: Jim Carrey Visits With Late Girlfriend Cathriona White's Sister

Following the news of White's death her family released a statement to the Irish Independent.

"The family of Cathriona White sincerely regret the untimely passing of their beloved daughter and sister," they said. "Cathriona was a shining light in our lives who was loved deeply by her entire family. We will miss her terribly and at this difficult time we ask to be left in private to mourn our loss."

Photos of Jim Carrey from over the years:

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Jim Carrey and Cathriona White 'looked really happy' on their final date together
Jim Carrey arrives at the premiere of "Dumb and Dumber To" at the Regency Village Theatre on Monday, Nov. 3, 2014, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
SATURDAY NIGHT LIVE -- 'Jim Carrey' Episode 1666 -- Pictured: (l-r) Jim Carrey and Iggy Azalea on October 23, 2014 -- (Photo by: Dana Edelson/NBC/NBCU Photo Bank via Getty Images)
SATURDAY NIGHT LIVE -- 'Jim Carrey' Episode 1666 -- Pictured: (l-r) Jim Carrey and Aidy Bryant on October 21, 2014 -- (Photo by: Dana Edelson/NBC/NBCU Photo Bank via Getty Images)
WESTWOOD, CA - OCTOBER 11: Jim Carrey arrives at the Hammer Museum's 'Gala In The Garden' Honoring Joni Mitchell And Mark Bradford at Hammer Museum on October 11, 2014 in Westwood, California. (Photo by Steve Granitz/WireImage)
WEST HOLLYWOOD, CA - OCTOBER 06: (L-R) Director Peter Bogdanovich and Actor Jim Carrey attend 'As You Wish' Book Launch at Pearl's on October 6, 2014 in West Hollywood, California. (Photo by Ari Perilstein/Getty Images for El Cuarton Films)
WEST HOLLYWOOD, CA - OCTOBER 06: (L-R) Actress Selma Blair and Actor Jim Carrey attend 'As You Wish' Book Launch at Pearl's on October 6, 2014 in West Hollywood, California. (Photo by Ari Perilstein/Getty Images for El Cuarton Films)
INGLEWOOD, CA - AUGUST 24: Jennifer Lopez and Jim Carrey attend the 2014 MTV Video Music Awards at The Forum on August 24, 2014 in Inglewood, California. (Photo by MTV/MTV1415/Getty Images for MTV)
INGLEWOOD, CA - AUGUST 24: Actors Jim Carrey and Jeff Daniels perform onstage at the 2014 MTV Video Music Awards at The Forum on August 24, 2014 in Inglewood, California. (Photo by Jason LaVeris/FilmMagic)
INGLEWOOD, CA - AUGUST 24: Jeff Daniels and Jim Carrey attend the 2014 MTV Video Music Awards at The Forum on August 24, 2014 in Inglewood, California. (Photo by MTV/MTV1415/Getty Images for MTV)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0072 -- Pictured: (l-r) Host Jimmy Fallon, actor Jeff Daniels and actor Jim Carrey during the 'Fake Arms: Burger Joint' skit on June 10, 2014 -- (Photo by: Douglas Gorenstein/NBC/NBCU Photo Bank via Getty Images)
NEW YORK, NY - APRIL 27: Jim Carrey, guest and Susan Sarandon attend the Philadelphia Flyers vs New York Rangers playoff game at Madison Square Garden on April 27, 2014 in New York City. (Photo by James Devaney/GC Images)
THE OSCARS® - THEATRE - The Academy Awards® for outstanding film achievements of 2013 will be presented on Oscar Sunday, MARCH 2 (8:30 p.m. - 12:00 a.m., ET/5:30-9:00 p.m., PT), at the Dolby Theatre® at Hollywood & Highland Center® and televised live on the ABC Television Network. (Photo by Adam Taylor/ABC via Getty Images)
HOLLYWOOD, CA - MARCH 02: Actor Jim Carrey speaks onstage during the Oscars at the Dolby Theatre on March 2, 2014 in Hollywood, California. (Photo by Kevin Winter/Getty Images)
BEVERLY HILLS, CA - FEBRUARY 27: Actor Jim Carrey arrives at the David Lynch Foundation Gala Honoring Rick Rubin at the Beverly Wilshire Hotel on February 27, 2014 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images)
WEST HOLLYWOOD, CA - JANUARY 23: Recording Artist Steven Tyler and Actor Jim Carrey arrive at 1 OAK LA Grand Opening With Special Performance By Steven Tyler at 1 OAK on January 23, 2014 in West Hollywood, California. (Photo by Michael Bezjian/WireImage)
BEVERLY HILLS, CA - JANUARY 12: 71st ANNUAL GOLDEN GLOBE AWARDS -- Pictured: Actor Jim Carrey poses in the press room at the 71st Annual Golden Globe Awards held at the Beverly Hilton Hotel on January 12, 2014 -- (Photo by Kevork Djansezian/NBC/NBC via Getty Images)
LOS ANGELES, CA - OCTOBER 26: Actor Jim Carrey signs copies of his new children's book 'How Roland Rolls' at Barnes & Noble bookstore at The Grove on October 26, 2013 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic)
TORONTO, ON - OCTOBER 06: Jim Carrey attends his book signing for 'How Roland Rolls'at Indigo Yorkdale on October 6, 2013 in Toronto, Canada. (Photo by Isaiah Trickey/FilmMagic)
TORONTO, ON - OCTOBER 06: Jim Carrey hosts a signing for his children's book 'How Roland Rolls' at Indigo at Yorkdale Mall on October 6, 2013 in Toronto, Canada. (Photo by Jag Gundu/Getty Images)
NEW YORK, NY - OCTOBER 05: Actor Jim Carrey promotes the new book 'How Roland Rolls' at Barnes & Noble Union Square on October 5, 2013 in New York City. (Photo by Gilbert Carrasquillo/FilmMagic)
ATLANTA, GA - SEPTEMBER 29: Actor Jim Carrey looks on prior to the start of the game between the Atlanta Falcons and the New England Patriots at Georgia Dome on September 29, 2013 in Atlanta, Georgia. (Photo by Kevin C. Cox/Getty Images)
HOLLYWOOD, CA- APRIL 27: Actor Jim Carrey attends actress Jane Fonda's Handprint/Footprint Ceremony during the 2013 TCM Classic Film Festival at TCL Chinese Theatre on April 27, 2013 in Los Angeles, California. (Photo by Jeffrey Mayer/WireImage)
HOLLYWOOD, CA - MARCH 11: Jim Carrey arrives at the 'The Incredible Burt Wonderstone' - Los Angeles Premiere at TCL Chinese Theatre on March 11, 2013 in Hollywood, California. (Photo by Steve Granitz/WireImage)
Michael Kahn, winner of the Oscar for achievement in film editing for his work on "Saving Private Ryan," is hugged by presenter Jim Carrey during the 71st Annual Academy Awards at the Dorothy Chandler Pavilion of the Los Angeles Music Center Sunday, March 21, 1999. (AP Photo/Reed Saxon)
Actor Jim Carrey, right, star of the new film "The Majestic," shares a laugh with comedian Rodney Dangerfield at the premiere of the film in the Hollywood section of Los Angeles, Tuesday, Dec. 11, 2001. (AP Photo/Chris Pizzello)
Oprah Winfrey talks with Jim Carrey backstage at the 76th annual Academy Awards, Sunday, Feb. 29, 2004, in Los Angeles. (AP Photo/Kevork Djansezian)
Actor-comedians Jim Carrey, left, Jack Black, center, and Will Ferrell joke backstage at the 76th annual Academy Awards ceremony in Los Angeles, Ca., Sunday, Feb. 29, 2004. (AP Photo/Kevork Djansezian)
Actor Jim Carrey talks to fellow cast members during the DVD launch party for "Eternal Sunshine of the Spotless Mind," Thursday, Sept. 23, 2004, in Los Angeles. (AP Photo/Rene Macura)
Jim Carrey accepts the award for Choice Bad Guy for his work in "Lemony Snicket's A Series of Unfortunate Events," at the 2005 Teen Choice Awards in Universal City, Calif. on Sunday, Aug. 14, 2005. (AP Photo/Matt Sayles)
Jim Carrey walks backstage after accepting the MTV generation award at the 2006 MTV Movie Awards in Culver City, Calif., on Saturday, June 3, 2006. (AP Photo/Kevork Djansezian)
Actor Jim Carrey attends the US Open tennis tournament in New York, Saturday, Sept. 9, 2006. (AP Photo/Julie Jacobson)
Actor Jim Carrey, right, and actress Jenny McCarthy are seen at the Oscar De La Hoya and Floyd Mayweather Jr. boxing match on Saturday, May 5, 2007, at the MGM Grand Garden Arena in Las Vegas. (AP Photo/Kevork Djansezian)
From left, Sean Connery, Cameron Diaz, Jim Carrey, and Annette Bening, in background, laugh while posing together at Target Presents AFI Night at the Movies in Los Angeles on Wednesday, Oct. 1, 2008. (AP Photo/Matt Sayles)
In this image released by the Sundance Institute, Ewan McGregor, left, and Jim Carrey are shown in a scene from the con-artist tale "I Love Philip Morris," one of the star-studded premieres announced Thursday, Dec. 4, 2008, for the independent-film showcase that runs Jan. 15-25 in Park City, Utah. (AP Photo/Sundance Institute, Patti Perret)
A scene from the Paramount Movie "The Truman Show" starring Jim Carrey. (AP Photo/Paramount Pictures/Melinda Sue Gordon)
Actor Jim Carrey poses on the press line at the "Target Presents AFI Night at the Movies" in Los Angeles on Wednesday, Oct. 1, 2008. (AP Photo/Dan Steinberg)
Actor Jim Carrey attends the premiere of "I Love You Phillip Morris" during the Sundance Film Festival in Park City, Utah on Sunday, Jan. 18, 2009. (AP Photo/Peter Kramer)
Actor Jim Carrey speaks at a press conference for the film "I Love You Phillip Morris" during the Sundance Film Festival in Park City, Utah on Monday, Jan. 19, 2009. (AP Photo/Peter Kramer)
Canadian actor Jim Carrey introduces his new film 'I Love You Phillip Morris' at a screening during the 62nd International film festival in Cannes, southern France Monday, May 18, 2009. (AP Photo/Joel Ryan)
Jim Carrey accepts the award for best comedic performance for "Yes Man" at the MTV Movie Awards on Sunday May 31, 2009, in Universal City, Calif. (AP Photo/Matt Sayles)
Actor and founder of the Better U Foundation Jim Carrey, speaks during panel discussion during the 2010 Clinton Global Initiative meetings, Wednesday, Sept. 22, 2010 in New York. (AP Photo/Stephen Chernin)
Actor Jim Carrey gets slimed on stage at Nickelodeon's 24th Annual Kids' Choice Awards on Saturday, April 2, 2011, in Los Angeles. (AP Photo/Matt Sayles)
Jim Carrey, right, accepts the award for funniest m.f. at the Spike TV Guys Choice Awards on Saturday, June 4, 2011, in Culver City, Calif. (AP Photo/Matt Sayles)
Jim Carrey arrives at the MTV Movie Awards on Sunday, June 5, 2011, in Los Angeles. (AP Photo/Chris Pizzello)
Photo by: Dennis Van Tine/STAR MAX/IPx 5/20/15 Jim Carrey at the final taping of "The Late Show with David Letterman". (NYC)
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WATCH: Jim Carrey Spotted for First Time Since Late Girlfriend Cathriona White's Death

"She was a truly kind and delicate Irish flower, too sensitive for this soil, to whom loving and being loved was all that sparkled," Carrey told ET in a statement on Tuesday. "My heart goes out to her family and friends and to everyone who loved and cared about her."

It is unclear whether Carrey was still dating White at the time she died. The actor was spotted out at a Hollywood art show on Sept. 24, four days before White was found dead. A source tells ET that Carrey spent most of the night chatting in small circles, but was "definitely acting single," and TMZ reports this as the day the two split up.

White's death remains under investigation. Assistant Chief Coroner Ed Winter tells ET that several notes were found at White's home, including one addressed to Carrey.

WATCH: Jim Carrey and Cathriona White's Last Vacation Together -- See the Beautiful Photos

If you or someone you know needs help, please call the National Suicide Prevention Lifeline at 1-800-273-TALK (8255).

Jim Carrey and Cathriona White: A Relationship Timeline
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