Reese Witherspoon and Mark Wahlberg

When: Circa 1996
So What Happened? The "Wild" star is now happily married to talent agent Jim Toth, and Mark Wahlberg is married to longtime love Rhea Durham. But back in the day when Reese Witherspoon starred in the movie "Fear" opposite Wahlberg, the two were an item. In the movie, Wahlberg shows his darker side and his character becomes obsessed with Witherspoon's character. Let's hope life didn't imitate art.
Uma Thurman and Gary Oldman

When: 1990
So What Happened? Uma Thurman was just 20 years old when she and Oldman (32) met on the set of "State of Grace." The two were married for only two years. Thurman later married actor Ethan Hawke, with whom she has two children, Maya and Levon. She also has a third child, a daughter named Rosalind Arusha Arkadina Altalune Florence Thurman-Busson, with businessman Arpad Busson.
Image via BEI Images/RexUSA
Kate Beckinsale and Michael Sheen

When: 1995
So What Happened? She's the beautiful star of the "Total Recall" reboot, and he's the talented star of "Masters of Sex." The duo met while performing in a touring company of "The Seagull." And while their nine-year relationship didn't last, the two amicably co-parent daughter Lily together. Beckinsale has since married film director Len Wiseman, while Sheen has been in a relationship with comedienne Sarah Silverman, who says about Beckinsale, "I love her. She's hilarious … and really cool."
Angelina Jolie and Mick Jagger

When: 1997
So What Happened? The Jagger/Jolie pairing is definitely one to put in the file of "how did I miss this one?" But if you read the Mick Jagger biography "MICK: The Wild Life and Mad Genius ofJagger" by Christopher Andersen, then you didn't. Anderson claims that when Jolie, who had just starred in the biopic about model Gia Carangi for television, played a stripper in a Rolling Stones video, she became the object of Jagger's obsession for two years. She seems to have that effect on people!
Drew Barrymore and Corey Feldman

When: 1989
So What Happened? According to Corey Feldman's biography "Coreyography," Drew Barrymore's mother first set the two up when Drew was 10 and Feldman, also a child actor, was 14. They later dated when Barrymore was in her mid-teens. But, according to Feldman, he was at the height of his drug use while Barrymore was trying to stay sober, so the two parted ways.
Jessica Alba and Michael Weatherly

When: 2001
So What Happened? Jessica Alba was the 19-year-old star of "Dark Angel" when she became smitten with her 32-year-old co-star. The two quickly became engaged but broke up a few months later. No reason was given, but maybe the reason is that she was 19. And he was 32.
Jessica Simpson and Adam Levine

When: 2006
So What Happened? Reports claim Adam Levine and Jessica Simpson hooked up at the Chateau Marmont. This could have gone under the radar had Simpson not left the next morning wearing the same shirt Levine was spotted in the night before. Levine apparently broke up with Simpson via text. Ouch.
Jaime King and Kid Rock

When: 2001
So What Happened? Before the "Hart of Dixie" was a refined mother with a baby on the way, not to mention being Taylor Swift's BFF, King was a hard-living party girl who dated the hard-living rocker. The two had a nasty breakup in 2001, leaving Kid Rock to write a series of what he called "get out of my life" songs. Though he wouldn't come clean as to whom the songs were about, it's safe to say some were about King. How sweet.
MORE: Celebrity Godparents
Sara Gilbert and Johnny Galecki

When: Mid 1990's
So What Happened? She's now the host of "The Talk" and just had a baby with music producer Linda Perry. And he's struck gold with "The Big Bang Theory," but they used to be co-stars on "Roseanne." Sara Gilbert credits Johnny Galecki with helping her realize she was gay, saying, "I thought he was super cute and had a crush on him. We started dating, and he would come over and we would, like, make out, and then I would start to get depressed. I eventually told him I thought it was about my sexuality, and he was super sweet about it." So cool!