Long story short, I shat where I eat. The girl I was with is in a number of my classes, is in my scholarship program, and lives next door to me in the dorms.

I did her nasty by being her first boyfriend (even though we never said we were official she just acted like it), taking her virginity and then her finding me with her friend she introduced me to sleeping in each other in a car ride.

I feel like shit not because of what I did but how I made the first girl feel. Even though it's "not my problem" I feel that I lead her on and this whole thing blew up in my face. How do I amend the situation? I'm pretty sure her friend and I are getting together soon, but I need to make things bearable for the girl who I "did wrong" since its practically shitting where I'm eating and I'm not the type of person (yet?) who can do something like that and blow it off without feeling bad for the other person.

Edit: I really think now that I'm just trying to protect my reputation, so doing this for the wrong reason.