In the mood

So my bf and I have lived very different sex lives. He has had many sex partners gfs and random hook ups. I however have only had about a hand full of different sex partners in which they were all either my bf or someone I was dating. In fact my current bf is my 4th sex partner and I’m only 25. In between my last bf and this current one I was single for 3 years and never hooked up with anyone because random hook ups are not for me however I don’t mind a little solo action. My problem right now is my bf never seems to want to be in the mood. In the beginning of our relationship we were doing it like everyday and now I’m lucky if he agrees to have sex. I think it’s because he’s had so much of it between 15- to his current age 24. And I feel i want it so often because I havent had as nearly as many sex partners as he does. Do any other ladies in here have this problem and if you do what do you do to deal with the issue? I hate feeling like I’m nagging or begging him to have sex.