I fucked my best friends girl. they broke up for a few weeks cus he cheated on her, she was leaning on me for support, we became close over weeks, got drunk at the club and one thing led to another. fucked for a week straight after that, she told me she wanted me to be her bf. then gets back with said bf. and hes pissed at me, but is back wit her but I don't feel like I did shit opinions?