I just wanted to get some opinions on my situation.
I dated this girl for about 7 weeks. It was really intense in the beginning; I stayed over her house every night during the week after our first date (that was her spring break, we go to colleges that are 2 hours away so we saw each on the weekends after that).
We broke up last Thursday because of what she calls "personality differences." However, she has called me or IMed me everyday since the breakup, just talk to about whatever. Today is Wednesday. On Monday, I called her and told her I was confused as to why she keeps talking to me. She said that our breakup wasn't "bad" as in there were arguments and we don't hate each other. I told her it was a little difficult to "get over" her when she keeps talking to me, and I asked her if she really meant what she said on Thursday and she said yes, we are not getting back together. Still though, I don't know what to think. Today she called me, then talked to me on IM later. The conversations feel, for the most part, the same as they were before, I mean maybe a little less "deep." But still. I know I shouldn't talk to her, but at the same time she's the only one I want to talk to. I'm probably overthinking this way too much for a relationship that wasn't even 2 months long. She's not calling me to say she misses me or stuff like that, but she does talk about things that only she knew about as my girlfriend.
I guess I'm just not sure what to think. She said its over, so its over and I'm dealing with that. My last 2 breakups were much worse and I ended up not really talking to the girls regularly afterwards.

Thanks for reading this

Stay away from this childish gal. She is kind of playing games, you decide if you want to play games. If you don't then stop it, ignore her calls and IM

That was purely a sex thing from day one and now that the thrill is gone, all she wants is friendship.
If you don't want that, leave her alone. Tell her the friendship thing is just not working for you.

Hope you enjoyed those two months together, and now that its over, you must cut contact, so YOU can get over her. That doesn't mean you can't be friends later, just for now you need some time. Whether she understands, or not, do what you have to to cope with your feelings of loss. Stop the contact.

That was purely a sex thing from day one and now that the thrill is gone, all she wants is friendship.

I should clarify that we only had sex once and it wasn't until a few weeks into the relationship. The sleeping over was just that; sleeping over. Yes in the same bed but just sleeping

Well, you dated 7 weeks and had sex in less time than that. The fact is you two had a 7 week fling and now it's over with. You can do the friend thing or if you can't, move on.