having sex just to cum

me and my boyfriend have been together for just about 2 years. at first we were friends with benefits, and made our relationship official after a few months. within the start it was crazy wild sex, then it became passionate, and now it's like he only wants sex to get me out of my mood and just to cum. I feel like it's boring and our relationship is fading and becoming boring. I have mixed feelings, assssfffffff:/