<human>: Can you provide a brief overview of the text?

If someone could give me some insight of what goes through a guys head?

    Almost 2 years ago dated a guy, "Bob", for a few months. Best. Sex. Of. My. Life. And he agrees. Oh my god it was so good. He started to draw back, dropped communication, so I ended things with him. Bob starts going out with a girl he met while seeing me. I felt like he used me and didn't treat me very well; I felt like he was a sleezy dude (read womanizer). Hot as fuck though, and super bright. I get over Bob, and forget about him.

     Fast forward almost 2 years, and I've moved back home, halfway around the world. Bob adds me on Facebook again. Says he misses me, that I'm a catch (smart, fun, sexy etc). I don't believe it when he says he was insecure and that why he drew back. I know wants to sext. So we do, which was all good, we had great times and it was fun, then and now.

     Find out he's not single. Still with the same girl. I delete him. I don't think he should have his cake and eat it too. He asks why I removed him from snapchat (goodbye racy pics). I confront him about what I think are his lies (missing me etc) and he says he does miss me, and think about me a lot. I say I still don't believe him and he retorts with saying he understands my POV, would've done things differently and asks me not to hate him. 

    Talk about school/life a bit, he's disappointed I moved away.  He suggests post grad in the country he is in. I say it shouldn't matter to him what I'm doing, that he has a nice life going for himself. He says, "we'll see".  
  

    What is up with this guy, guys? ( and ladies of course haha) Is he still just lying? Why two years later? I don't understand.
<bot>: Why is he telling me he misses me when there is nothing he can do about it and is in a long term relationship?