sex drives

Kelsey
My boyfriend wants sex at least twice a week and according to him I only want it twice a month. I don't want sex all the time. I feel like it's meaningless then. I want to help pleasure him but at the same time I want to tell him to just go masturbate because I don't want to do anything. 
Sometimes I don't want sex because it really hurts my vagina. I'm very little and can't handle it all the time. I just don't know what to do anymore because to him I'm just not trying but to me he's too needy and it upsets him.