When Seth Rogen found out his best friend Will Reiser had cancer, he was 23 years old. At the time, they joked about the disease and used his situation to get sympathy from women at bars. But the actor has come a long way since then. He's now 29, is engaged to fiancée Lauren Miller and says he's learned to "talk much quieter."
Seth Rogen Talks '50/50,' Marriage And Babies