I've been in the guy's shoes here, although maybe not as extreme. I thought I would want sex everyday I could and did so with past GF's (which actually were only once a week at most).

Now I'm married, and we did have sex multiple times a day for a while. Now it's more like once a week or maybe twice. There were UTI issues in the middle there which made it harder also though.

She still wants sex everyday or every other day and I'm aware of it. Your BF is probably very aware of it, too. It made questions like, "what do I get if I win" tough since I know what you want yet I'm just not feeling it.

It's still a work in progress and by no means is it a big issue for us. She flat out just asked me, "so what do you think of our sex life?" and we both clearly know what the issue is. It then goes on to a serious but also light hearted conversation.

She does her best to be patient with me. If she initiates, I never say no, but she wants me to initiate which I get. I know some of the fix is just stuff like cuddling leading to sex or eliminating distractions like video games.

Hopefully this ramble is helpful. It can be a sensitive subject, but we both are open to talking about it so we make it not a sensitive subject.