We were definitely "Clueless" about this '90s hookup.
During a reddit AMA this week, Jeremy Sisto revealed that he and his then-TV movie costar Reese Witherspoon dated back in the day, after the two appeared in the 1992 film "Desperate Choices: To Save My Child."
"She was my first actress girlfriend," said Sisto. "We had a long distance relationship for a long time. I was so into her. Then she went to Africa to do a movie and I guess I thought she had broken up with me because she didn't call that much, so I moved on and met my ex-wife Marisa. When she returned, I found out that wasn't her intention but i had already gotten involved. Felt badly. She's a great person."
The actor married Marisa Ryan in 1993, when they were both 18. They'd get divorced in 2002, before Sisto tied the knot with Addie Lane in 2009. Jeremy and Addie have two children together.
Reese went on to marry "Cruel Intentions" costar Ryan Phillippe in 1999. They'd have two children before they finalized their divorce in 2007. She's now married to Jim Toth and the two share son Tennessee.
Sisto also briefly talked about his former "Clueless" costars during the AMA, after one fan asked if he ever sees anyone from the cast.
"I see Paul [Rudd] every now and again. Alicia [Silverstone] i reconnected with on Suburgatory and i play basket ball with her husband. I run into all of the time and again. I guess honestly i don't really feel what you might imagine about being in such iconic movie," he wrote. "I wish i did but it's just not as simple as that. I never experienced the movie from that magical perspective of childhood simplicity. Mine was Breakfast Club."
See what Sisto told toofab about working on the classic film at SXSW earlier this year -- and check out more surprising celeb hookups in the gallery above!