<human>: I used to be best friends with this guy.  We were close for about a year and a half, and then I decided that I wanted to try sleeping with him.  We did, and then I left for a while. 

We tried to stay close while I was away, but I got frustrated that he was talking about girls while I was having a lot of personal issues.  I got frustrated with him and lashed out, and we stopped talking for a few months.  

When I returned, I tried to reach out to him again, but after about a month I felt that we could try to be FWB.  I was expecting too much out of him, wanting to hang out too much apparently, and got upset when he started pulling away, and lashed out again.  

We didn't talk for a few months, and then I asked to hang out with him.  We did and had a decent time, but then he bailed on me a few times when we were going to hang out again, and I got frustrated and lashed out.

I tried texting him to ask why he didn't want to be my friend anymore, and he said he didn't have a good reason except we weren't alike anymore.

I can't stop thinking about him, although it has been a few months since he's said that.  I really miss having him as a friend, and I have tried to apologize, but I guess I'm too anxious about getting that friendship back that I'm easily frustrated when he doesn't want to do the same.  I feel like since I've tried reaching out so many times, it's just weird at this point.

Is it weird/stalkerish

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Slept with an old friend a little over a year ago, fell out after.  Have tried to reach out a few times, but have then gotten frustrated with him.  Is it weird to continue to reach out?