Popsugar Celebrity Celebrity Couples Celebrities Who Have Dated Their Costars 18 Actors Who Couldn't Seem to Stop Dating Their Costars June 2, 2018 by Britt Stephens View On One Page Photo 48 of 50 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 48 Kate and Ian Somerhalder also met on Young Americans and were in 2001's Rules of Attraction. They dated for a few months. Previous Next Start Slideshow Celebrity CouplesCelebrity FactsCelebrity Breakups