So i had sex with an engaged girl in September. It didn't really bother me until recently. I was hanging out with her this weekend and we both a more than a few drink in our system. She tells me "Mike lets go to 7/11" I didn't really want to walk over there so she said i will give you a blowjob if you come" So we walked and came back. We started making out and she gave me a BJ. While she was giving me a Blow Job she tells me i cant do this anymore. Starts crying and spills her guts. I was trying to comfort her and help her out but it was quite awkward. But what bothers me most about all this is that Earlier in the night she went out for a smoke. So i came with her and other people so we were all touchy with eachother and shit. They also know i had fucked her before. So my friend was at their dormroom and the girls who saw brought it up. They were saying how disgusting it was for me to do that with her. I honestly do feel bad. But what bothers me is that my reputation in these girls eyes is ruined. I was talking to my friend about this and she says we all have made mistakes but yours is big which i understand. I just cant seem to get out of this funk.

tell everybody you thought you were in love and move on yourself, the dude she was engaged with wasnt who the girl really wanted, in a way you saved both people from making a huge mistake by marrying each other.

The dude doesn't know and is in a different state. She has cheated on him with other guys also but they don't go to this school. I just been feeling depressed about the last few days

yes feeling like shit...i know, youre friends convinced you its wrong but it isn't theres nothing wrong with having sex with this chick like nothing you're overamplifying it

There are plenty of single women on the planet. No idea why you felt the need to go for a married one. Each to their own. But, try putting yourself in the other guys shoes. PUA isn't about ruining lives, it is about improving yours.