Celebrity Ryan Reynolds Spends Birthday Weekend with Blake Lively "They are very much a couple," a source tells PEOPLE. "They're really happy together" By People Staff Published on October 22, 2011 06:30 PM Share Tweet Pin Email Photo: Sam Sharma/Pacific Coast News Happy birthday to Ryan Reynolds! The actor, who turns 35 on Sunday, is celebrating this weekend with someone special: Blake Lively. The Green Lantern costars – and their dogs – were spotted Saturday morning outside an apartment in Boston, where he’s filming the action film, R.I.P.D. And this is no casual birthday meet-up. “They are very much a couple,” a source tells PEOPLE. “They’re really happy together.” Blake Lively, Leonardo DiCaprio Break Up Lively, 24, recently split from Leonardo DiCaprio after a summer romance, and Reynolds is still friendly with his ex, Scarlett Johansson.