frat guy wishing my frat bros would fuck/gang bang my girlfriend (fantasy to reality) [MF]

I have this fantasy/fetish that became a thing this past 2 years since i started dating my girlfriend. I would love to see my girlfriend take on a big white or black dick, especially black. And it would turn me on more to see multiple guys go at her.

It all started when she started cumming to our parties every week. She started hooking up and fucking one of my good friends. At this point i was just getting to know her and we were just friends. Their little thing ended after a couple weeks. What made everything so intense over the course of our relationship in the future of this story is while my friend and my future girlfriend were dating he told me everything, how he fucked her, what she likes, how she likes it. So i knew all these things and it turned me on. I constantly tried to get her attention of being more than just friends at parties but she wouldnt really give me the time of day.