<human>: I met a guy at work a little over a year ago. Let's call him Bob. We both had SOs but we ended up becoming really good friends and I totally fell for him. Then we had sex and it was the best sex of my life. (We are both late 20s.)

I left my boyfriend because I didn't want to be a cheater and I clearly wasn't in love with him. I didn't ask Bob to leave his girlfriend. I don't know why. I think I was pathetically happy to have what I had of him. We just kept having sex and it is so amazing I can't believe it. Anyway, he ended up leaving his girlfriend a few months later.

Now we hang out every day and have sex constantly. We love talking for hours almost as much as sex. BUT I'm totally in love with him and he hasn't mentioned anything about a real relationship. 

This has all been going on for more than a year! I know I should end it... Because he must not actually care for me, right? Right? Guys: Why does he spend so much time with me? Like almost every day?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: I'm 29/f and he is 28/m. Relationship has been going on for a year. Lots of sex and hanging out but no formal commitment that we're together. WTF?