Selena Gomez admits she used to get 'very protective' of her parents' dating lives (exclusive)

Selena Gomez says she's got "decent" relationship intuition, at least when it comes to her parents' love lives. 

In Hotel Transylvania 3: Summer Vacation, Gomez stars as Count Dracula's daughter, Mavis, who is trying to help her single dad when it comes to finding a love connection.

While on vacation on a luxury cruise, Dracula (Adam Sandler) becomes enamored with the ship's captain, Ericka Van Helsing (Kathryn Hahn), who is secretly plotting Dracula's demise, and Mavis is the only one who feels something isn't quite right with her father's new love interest.

Speaking with ET's Cameron Mathison at a press junket for the upcoming animated family comedy, Gomez revealed that she used to be very specific about the people her own parents dated when she was younger.

"I like to say [that I have] decent discernment," said Gomez, when it came to her dating intuition. "But I come from a separated family, so I used to get very protected over my parents when they would date."

Gomez's parents, who were both in their teens when she was born, divorced when she was five years old, and the 25-year-old star said she that if the person her parents were dating felt off to her, she would "give them a little test."

See Selena Gomez and her mom through the years:

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Selena Gomez and her mom
Actress Selena Gomez (R) hugs her mother Mandy Cornett (L) as they arrive at the 41st Annual NAACP Image Awards at the Shrine auditorium in Los Angeles, February 26, 2010. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT)
LOS ANGELES, CA - JUNE 07: Selena Gomez (L) and her mom Mandy Cornett arrive to the 20th Annual 'A Time for Heroes' Celebrity Carnival held at the Wadsworth Theater on June 7, 2009 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)
WEST HOLLYWOOD, CA - FEBRUARY 26: Mandy Teefey and Selena Gomez attend the 2012 Vanity Fair Oscar Party Hosted By Graydon Carter at Sunset Tower on February 26, 2012 in West Hollywood, California. (Photo by Christopher Polk/VF12/Getty Images for Vanity Fair)
HOLLYWOOD, CA - JUNE 12: (L-R) Brian Teefy, Janice Spire, Mandy Teefy and Selena Gomez arrive at the Alliance For Children's Rights 3rd annual celebrity Right To Laugh event at Avalon on June 12, 2012 in Hollywood, California. (Photo by Joe Scarnici/WireImage)
Singer/actress Selena Gomez (L) and mother Mandy Teefey attend the 2010 Hollywood Style Awards with The Palazzo Las Vegas, Klipsch, and FRS Healthy Energy at the Hammer Museum on December 12, 2010 in Westwood, California.
GLENDALE, CA - AUGUST 16: Actress Selena Gomez (center) posing with her mother Mandy Teefy (L) and step father Brian Teefey (R) at the UR Votes Count hosted by Selena Gomez on August 16, 2008 at the Glendale Galleria in Glendale, California. (Photo by Mathew Imaging/WireImage)
LOS ANGELES, CA - JUNE 28: Mandy Cornett and Selena Gomez sighting in Hollywood on June 28, 2009 in Los Angeles, California. (Photo by Jean Baptiste Lacroix/WireImage)
BEVERLY HILLS, CA - DECEMBER 10: Actress Selena Gomez (C) with her mother Mandy Cornett (R) and step father Brian Teefey (L) attend the UNICEF Ball honoring Jerry Weintraub held at the Beverly Wilshire Hotel on December 10, 2009 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images for UNICEF)
LOS ANGELES, CA - MARCH 30: Executive producer Mandy Teefey (L) and daughter actress/executive producer Selena Gomez attend the Premiere of Netflix's '13 Reasons Why' at Paramount Pictures on March 30, 2017 in Los Angeles, California. (Photo by Allen Berezovsky/WireImage for Fashion Media)
LOS ANGELES, CA - MARCH 30: Executive producer Mandy Teefey (L) and daughter actress/executive producer Selena Gomez attend the premiere of Netflix's '13 Reasons Why' at Paramount Pictures on March 30, 2017 in Los Angeles, California. (Photo by David Livingston/Getty Images)
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Eventually, both her parents, Ricardo Gomez and Amanda Teefey, found love and went on to expand their families, allowing Gomez to become a role model for her two half-sisters, 5-year-old Gracie Elliot Teefey and 3-year-old Victoria Gomez.

Speaking about her little sister, Gracie, the "Bad Liar" singer says, "She's my biggest supporter. It's awesome."

Gomez said Gracie is going to watch her new film when it comes out, and she's excited to see her reaction to the movie.

"She's just there to have a good time. I don't think my sister overthinks anything and that's what I love about her. She enjoys it. She's excited about life," Gomez shared.

Hotel Transylvania 3: Summer Vacation cruises into theaters July 13.            

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