Time for his gf to move on. OP sorry but you're a f-ing asshole for this, there's no way in hell you didn't know what you were doing. Work on yourself and all that, sure, but away from the poor girl, what'd she do to deserve it?

Holy shit dude, I had a tonsillectomy last summer, the worst 20 days of my life. Had to be on painkiller shots twice a day for 10 days, and could eat only vanilla pudding, ice cream and soups. How the hell did you manage to be in the mood to do the deed? Hats off.