Shotgun Love(2011)

Original title: 사랑이 무서워

Sang-yeol, a 30-something loser stuck in a dead-end job as a home-shopping model, is able to marry the girl of his dreams - his modeling colleague So-yeon - when he discovers she's pregnant with his child. But after marriage an even bigger discovery awaits: the child isn't his - in fact he's still a virgin, and he might even be gay...