<human>: Can you provide a brief rundown of the text in within 3 sentences?

This isn't the first time in our relationship that jealousy has been an issue, but this situation is getting kind of unbearable so I'm trying to find some advice. I love my girlfriend and I love our relationship and don't want to break up. 

I'm a good person and I've tried to act right and be a good boyfriend. I've made mistakes, but I've never slept with anyone else while we've been together. I kissed someone else early in our relationship while drunk, but confessed and she forgave me. I've otherwise been a model boyfriend. That was a mistake that 19 year old me made that was just stupidity. 

I'm in a summer class with this girl, Claire, and we've hit up a nice friendship. She has a long-distance boyfriend and there is nothing wrong going on there. We study together and talk some, but I've never crossed a line. It is just a friendship. I've never hung out with her outside of school or drank with her or anything. And we've only known each other for a month. 

My girlfriend looked through my facebook messages with Claire yesterday, and is uh, very, very upset. The messages never crossed a line. I just talked to her. She would talk about herself, and I'd talk about myself and we'd just pleasently talk. I've been bored a bunch and its sorta fun to message back and forth. There is no talk of sex or anything. My girlfriend's issue is that there are 2000+ messages and some of the things Claire said. She said a few times how similar we are (or she thinks we are) and said things to that effect, and my girlfriend interpreted them in a very suggestive way. But they weren't. I talked about my girlfriend a lot, and was almost always positive about her. 

She wants me to stop studying with Claire and to de-friend her. I think its utterly ridiculous. She has nothing to worry about and it isn't fair. I don't know what to do though. This has become a much bigger argument than I'd like.
<bot>: Girlfriend is uncomfortable with a new friendship with a classmate. Wants me to end it because too many messages were exchanged. I think this is ridiculous. Am I wrong?