My boyfriend / father of my child doesnt call me beautiful or pretty etc.?

Weve been together going on three years. He use to call me beautiful he stoped a little after our first year. I had his baby during the second. He doesnt make me feel pretty any more, sure we have sex but its easy for a guy to have sex with just anyone. Ive discussed this with him before, he says he grabs my *** as a compliment and stuff and hes sorry if he never really says it as often as he should. i know i dont need someone to make me feel pretty but i want to know im beautiful in his eyes still. And my point is its not a matter of how often that he should call me beautiful or something its the concept of why doesnt he want to?