Relationships troubles

So my boyfriend and I have been together a little over two years. He used to be so romantic and affection but as time has gone on and we transitioned from long distance to living together things have changed. I've brought it up several time. Told him that I feel like he's uninterested in me. He brushes it off like its no big deal but I'm really upset. I am not good at communicating about my feelings and am hoping someone can help me find the right words. I know he's not unfaithful or anything like that. He says he's just comfortable in the relationship. But I feel in love with him for the little things and they're important to me.