<human>: So my boyfriend and I have been dating for about two years. Sex with him has been feeling like... well, like he's doing me a favor. Foreplay feels forced and mostly just involved blow jobs and he does not really put in effort. I'm not sure if he just has a low sex drive? It seems like he never really wants to have sex, though he will say he does when he is with me. This has been going on for about a year or so, which is when we decided to become official. 

Before this, he had never had a good relationship and he has had numerous sexual partners (he believes that the number is around 40 or so) and he is very excited by casual sex. When we first met, we slept together instantly and he just seemed enchanted by my body and so turned on all the time by me. I haven't really felt like I turn him on since we became official.

I have suggested trying to spice up our relationship, but he doesn't seem interested outside of including other women, or becoming polygamous. I am extremely opposed and I demand monogamy.

I sometimes wonder if he is unhappy being committed to me and would rather be sleeping around again like he used to. He has told me he would be unhappy without me and that he loves me, but being committed has kind of killed us in the bedroom.

We've spoken about this. He has agreed to try and be better. This was a few days ago. Since then, I brought up sex again (which honestly, I wish I weren't the one who always brought up the topic of sex.. it would be nice if I didn't have to schedule it or if HE would actually bring it up) and it seemed like he had agreed that we would (but not that he WANTED it) but then later we got into a very petty argument that resulted in him being bothered by me, so he wasn't turned on. The next day he admitted it was petty and was sorry. So. Still no sex.

Can you give me a shortened version of the text?
<bot>: Boyfriend is very used to sleeping around, monogamy has hurt our sex lives, and I'm not really sure what I can do about it.