Jon Lovitz, 58, and Jessica Lowndes, 27, spark relationship rumors with romantic new pics

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'90210' Star Jessica Lowndes Seemingly Calls Jon Lovitz Her 'New Man,' Shows Off Diamond Ring

Jessica Lowndes has been Instagramming all weekend about her new mystery man -- but is it Jon Lovitz?

The 58-year-old comedian tweeted out a photo of himself and the 27-year-old 90210 star riding in a Bentley convertible on Sunday. "Easter with my bunny, @jessicalowndes!!! ♥️♥️♥️," he captioned the pic. Lowndes also shared a selfie in the same car, writing: "His... ❤️.

See photos of the 27-year-old actress:

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Jon Lovitz, 58, and Jessica Lowndes, 27, spark relationship rumors with romantic new pics
Actress Jessica Lowndes arrives on the red carpet at the 2014 Canadian Screen awards in Toronto, March 9, 2014. REUTERS/Mark Blinch (CANADA - Tags: ENTERTAINMENT)
Actress Jessica Lowndes attends the 2012 Hollywood Christmas Parade in Los Angeles November 25, 2012. REUTERS/Phil McCarten (UNITED STATES - Tags: ENTERTAINMENT)
BEVERLY HILLS, CA - NOVEMBER 18: Jessica Lowndes attends Louis XIII Celebration of '100 Years' The Movie You Will Never See, starring John Malkovich at a private residence on November 18, 2015 in Beverly Hills, California.(Photo by JB Lacroix/WireImage)
NEW YORK, NY - SEPTEMBER 13: Jessica Suzanne Lowndes is seen outside the Tracy Reese show during New York Fashion Week 2016 on September 13, 2015 in New York City. (Photo by Daniel Zuchnik/Getty Images)
NEW YORK, NY - SEPTEMBER 12: Actress Jessica Lowndes is seen arriving at Monique Lhuillier Spring 2016 during New York Fashion Week on September 12, 2015 in New York City. (Photo by Gilbert Carrasquillo/FilmMagic)
CANNES, FRANCE - MAY 18: Actress Jessica Lowndes is seen during the 68th annual Cannes Film Festival on May 18, 2015 in Cannes, France. (Photo by Marc Piasecki/GC Images)
LONDON, ENGLAND - MAY 27: Jessica Lowndes at the Chiltern Firehouse on May 27, 2015 in London, England. (Photo by Mark Robert Milan/GC Images)
LOS ANGELES, CA - FEBRUARY 27: Jessica Lowndes seen leaving a cafe on February 27, 2015 in Los Angeles, California. (Photo by MPI99/Bauer-Griffin/GC Images)
WEST HOLLYWOOD, CA - FEBRUARY 22: Jessica Lowndes attends the 23rd Annual Elton John AIDS Foundation Academy Awards Viewing Party on February 22, 2015 in West Hollywood, California.(Photo by JB Lacroix/WireImage)
LONDON, UNITED KINGDOM - MAY 02: Jessica Lowndes attends the annual fundraiser in aid of Gabrielle's Angel Foundation for Cancer Research at Battersea Power station on May 2, 2013 in London, England. (Photo by Olga Bermejo/FilmMagic)
LONDON, ENGLAND - MAY 02: Jessica Lowndes attends the BT Sports Industry awards at Battersea Evolution on May 2, 2013 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
Jessica Lowndes performs onstage at the holiday tree lighting concert and opening of L.A. Kings holiday ice rink held at the L.A. LIVE plaza on December 4, 2010 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)
NEW YORK - SEPTEMBER 12: Actress Jessica Lowndes attends the Lela Rose Spring 2011 fashion show during Mercedes-Benz Fashion Week at The Studio at Lincoln Center on September 12, 2010 in New York City. (Photo by Joe Kohen/WireImage)
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His 🚘... ❤️

A photo posted by Jessica Lowndes (@jessicalowndes) on

In January, Lowndes and Lovitz were spotted in Honolulu taking photos of one another after they both guest starred in Hawaii Five-O together. "Who needs a selfie stick when your co-star is Jon Lovitz?" she Instagrammed at the time. "Throwback to one of the funniest and most random paparazzi moments 😂😂😂 #comedy #hawaii50 #tbt."

Lovitz shared this most recent photo just a few days after Lowndes posted a pic of a man with his hands between her legs. "There's a new man in my life," she wrote. "His hands are wise and tell a thousand stories... #smitten #hatersgonnahate."

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His hands are wise and tell a thousand stories... #smitten #hatersgonnahate 🙊❤️👻 snap: realjlowndes

A photo posted by Jessica Lowndes (@jessicalowndes) on

Further alluding that she was dating an older man (Lovitz is 33 years her senior), she quoted the Thai proverb, "Old cows love to eat young grass."

She added, "And I love me some old cows... 😘"

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And I love me some old cows... 😘🐄

A photo posted by Jessica Lowndes (@jessicalowndes) on

She went on to post a pic from an ice cream date with the message: "You say sugar daddy but I say ice cream daddy! Lol 🍨🍦😍 #SweptoffMyFeet #ExtraSprinklesPleaseDaddy."

You say sugar daddy but I say ice cream daddy! Lol 🍨🍦😍 #SweptoffMyFeet #ExtraSprinklesPleaseDaddy💁🏻

A photo posted by Jessica Lowndes (@jessicalowndes) on

Lowndes also Instagrammed a video of herself in bed that she says was shot by her new guy. "When bae films you waking up in the morning... 😂❤️😍 #TooOldToUseHashtags #MrBig," she wrote.

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When bae films you waking up in the morning... 😂❤️😍 #TooOldToUseHashtags #MrBig

A video posted by Jessica Lowndes (@jessicalowndes) on

Whoever the actress is dating, it appears to be serious. "No, I haven't been hacked. I'm just really excited to be able to finally share this secret with you guys," Lowndes said in a video clip on Friday before sharing a close-up image of a huge diamond ring.

Being happy never goes out of style ☺️💕

A video posted by Jessica Lowndes (@jessicalowndes) on

ET has reached out to both Lowndes and Lovitz for comment on the pics.

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