Ryan Gosling was 23 when he began dating the then-39-year old Sandra Bullock. The two met on the set of Murder by Numbers and dated for a year until their breakup in 2003. The Notebook co-stars, Gosling and Rachel McAdams, dated off and on from 2004 to 2008. E! Online reported that Blake Lively and Gosling were casually dating in 2010. The Drive star is currently dating actress Eva Mendes.