A girlfriend of mine introduced me to her best friend's ex-fiance. They dated on and off for about two years and she pressured him into a premature engagement, that obviously didn't work out. When he and I met, there was an undeniable connection despite my girlfriend forewarning me about her connection with him. As it turns out, I actually really like him -- we have great chemistry and I have enjoyed every bit of time spent with him.
Now it all sounds fine and dandy, but my girlfriend is angry with me. She thinks I put her between a rock and a hard place by dating her best friend's ex. Apparently this girl is still heartbroken and my friend feels like she is betraying her BFF by remaining close with me. Since I don't know this girl, I don't feel badly for dating this guy, but I do however, feel guilty for causing unwarranted drama for my girlfriend. So am I in the wrong here?