a class="link" rel="nofollow" target="blank" href=" Hader is about to tackle his first leading-man role in bTrainwreckb. We caught up with the actor over the weekend to talk about the rom-com's refreshing take on gender roles and how Lena Dunham might have played a role in him landing the part. Bill also told us about his only one-night stand - a story you absolutely have to hear. bTrainwreckb hits theaters July 17.