Sex Attraction

Lately I noticed that My "boyfriend" and I dont fuck like we used to. Its been awhile since we actually made love and i cant even remember the last time he wanted to fuck. I always have to ask him like hey you in the mood to go and most of the time i get a no but when i do get a yes its like he just wants to get it done and over with. Is it me? He always says he wants to fuck then when i ask its no. I just dont know what to do or say anymore can you help me ?