I just got out of a relationship about a month ago and I had been pretty upset about it but have been doing a lot better the last week and a half or so. Anyway, my brothers wife's little sister just got out of a relationship about two weeks ago and she told me she wanted me to take her out to get over her ex and to meet some more guys. Long story short, I take her out, she is looking absolutely gorgeous, we end up getting really trashed and sleeping together. I feel kind of bad about the whole thing because it just doesn't seem right. My brother and his wife already know and they think its hilarious. Is this something that I will ever be able to live down? Am I a bad person?