My BF (M28) and I (F26) have different libidos and it is exhausting

My BF and I have been together for 7 years, and as long as i can remember, we always had discussions about our love life. My bf adores me and basically wants me all the time, 2 or 3 times a day. Me on the other hand, i love my bf, but i am just not a very sexual person. For me, 2 times per week is fine, on vacations more often. We kind of have a middle ground with usually every other day and when i am not in the mood i take care of him. But still, it is straining on me, because he will complain about it often.

For example, we did the deed on saturday, on sunday he got a bj, now on monday and tuesday i was not feeling like it, he didn't say anything on monday, on tuesday he asked a few times. On wednesday, he was in a bad mood and really grumpy during a game we played together, which made me sad. We later had sex and afterwards he was happy & said he was grumpy earlier because of the lack of sex. The next day, i gave him a bj in the shower and in the evening rejected him when he wanted sex. He is hurt when i reject him, and it happens often because he will ask me almost every day "do you want to do something together?" (he always means sex with that).

It is a big issue for us, because i feel like i can not meet his needs and at the same time i often do something even though i dont really want to. I think my view on sex changed, as i don't see it as a big deal anymore, more like something i do for my partner. He says it feels for him like i plan it, like, okay it has been 2 days, now i should sleep with him again. I guess that is kind of true...Now, we even broke up once but got back together and he said he knew what he was getting into with me and that he accepted it. But still, we had so many talks about this topic and it really worries me for the future. Sometimes i think we are not compatible and should break up, but we love each other and are happy in other aspects of life.