Why are douchbags so attracted to me?

This is the story of my life. I always wind up dating douchebags. They always start out decent and then its just downhill. Like take the last guy I dated. On our third date he decided to show his true colors. Within 30 minutes of getting to the bar he had already taken 2 shots and had 2 drinks. It wouldn't have been so bad if he would have spaced them out but it was insane. He then continued to take shots throughout the night. I have no idea on the exact number of shots he consumed but I think it was probably close to seven. Can you say alcoholic? I would expect this kind of ridiculous behavior from a frat daddy but a 32 year old? What a jackass. It was overall just really disappointing. Oh well, onto the next one........