Hello, everyone! At this point, I feel like nothing can help me but lets see if you guys have some good advice ☺️

Me and my boyfriend have been together for 4 years, we met when I was 16 and he was 18 at that time, he was my first in everything (and so was I for him) But now I don't even know what and when started going downhill...about two years ago our sex life started slowly dying and we both know that's kind of my fault because I am the one that does not want to have sex - not that I don't want to have sex, I just don't find him sexually appealing. Like, I would be super horny waiting for my man to come home and do fun things together, but as soon as he gets home my desire for sex just disappears. We now have sex about once in month, sometimes even less, I just don't want him. We have had manyyy arguments about this topic and all he says is that I don't love him and his body and that it is my fault that our relationship is going to an end, but the thing is that I dont want this relationship to end, we both love each other and I am willing to do anything to make this relationship grow better and stronger, I just don't know how..