feeling confused

My bf and I have been together for a long time. He used to be so attentive but that has changed so much. It's almost feels like he has prove he can be in control of his emotions at all times. He feels so far away. He tells me he loves me all the time but he's changed. Last night we went out to eat and there was this homeless man asking for money to buy food. I kept talking about it and he went and got him pizza. That simple act made me want to jump him. Lol he always acts so shut off lately that it was amazing to see him like that again. We went home and got comfortable to watch a movie and pretty soon things got hot and heavy. I was so into when he flipped me on my stomach, shoved it in and within a few minutes it was over. It was so uneventful that I didn't even realize he had finished. He left me feeling like garabage because it was such a beautiful moment until he decided he needed to be in control again. Don't get me wrong if he had of taken care of me first it would have been hot to have him flip me over and take me, but when he was done, he was done and I was frustrated. He's been doing this a lot and I've told him about it but it doesn't change. It always makes me feel so distant from him and makes me feel like he is so selfish. Anyone else go through this? Does it make you feel distant? I feel stupid because it's just sex and I can always take care of myself, but it's different when he does it.