First to start sex

Ok so my boyfriend and I have been together for 4 months and have been having sex for 3. But I started to notice that every time we have sex I'm the one to initiate it and get things rolling ( whether it be grinding on him or whatever) but I'm always the one to start it up. When it's going he's the dominant one but I always feel like I'm forcing him to have sex even though he tells me he loves how often we do it ( he's in the military so he live in base which is an hour and a half drive to my place. He stays at my house every Friday, Saturday and Sunday and we have sex maybe twice or three times a day) but I just can't help but think that I'm being pushy with my sexual appetite.