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 49 of 50 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 49 Ian later went on to date his Lost costar Maggie Grace. They struck up a romance in 2006 after getting killed off the show. Previous Next Start Slideshow Celebrity CouplesCelebrity FactsCelebrity Breakups