Before the obvious answer, this has been a big debate among my friends since it happened. This happened over 10 years ago while I was in college. At a party a woman and I were talking and this is where detail is very important before passing judgment. SHE was flirting with me after about an hour of just talking. And by flirting I mean she was touching my arm and shoulder and in close proximity than normal, especially if someone is taken. 

It wasnt until I had asked if she wanted to head back to my place that she told me she had a bf. Now more detail again, when she told me it wasnt a quick and assertive "sorry I'm I'm a relationship" response. The best way I can put it is "well I am in a relationship" and had a pause after well. Now, after I said ok and just kept talking to her, she still kept staying close and playfully touching my arm. 

Now, in my book I've always said if a woman hits on you first then it's fair game. So after 4 beers and me being a horny college kid, I ask again if she wants to go back to my place. She still hesitates and responds that shes in a relationship so I up the ante. I tell her that we can go back to my place and hangout and then that will give her an idea if she truly sees a future with her bf. She agrees and after maybe 10 minutes at my place her top is off.

So, I know it seems like I'm the asshole but honestly, AITA given the details on the events leading up to it? 