<human>: Give me the gist of the text in a nutshell

Started grad school about 7 weeks ago and I've been meeting a lot of new people and getting adjusted to a new city, school, etc. One of the first people I met was "Kelly", and we became really fast friends. We have all of our courses together, and we just get along really well. She is probably my closest friend here. 

I've been having an absolutely ridiculous level of success with girls here for the last month. I've been having so much fun, and outside of school, my priority has been hooking up. Kelly and I hooked up the first week we met, lightly (just kissing) and we've done something similar a couple weeks ago. Other than that we've been platonic and we understand we both are single. 

I haven't said anything to her about other guys, or been anywhere near jealous. I slept with someone else in our class last weekend, and somehow that got to Kelly. I made a pass (that didn't go anywhere) with one of her friends too around the same time, and she found out about both of these things. 

I've been iced since then. She doesn't talk to me in class, doesn't respond to my texts, and talks shit about me to people we mutually know. Its really, really frustrating and hurtful, and it sucks. I want us to go back to how we were, and I don't want to have a reputation among our class. 

I'm just at a loss as to how to get to her. I obviously realize why she is frustrated, but I just think its so minor. I'm pretty much willing to do anything to make it up to her and to repair the friendship, but I just don't know how to break this barrier she has put up. Its like I don't exist.
<bot>: Friendship with my [female] friend is over after she found out I hooked up with someone else. I want to know how to get through to her, and smooth things over.