My man's sex drive

My boyfriend sex drive has totally slowed down. when we first met, he told me that he loved sex alot...well 3 months later he slowed down. I love sex, and I can have sex twice day everyday if i could. But he seems bord with our sex life. I mean there are times when we have amazing sex!!!! But there are times when, he falls asleep edit: during foreplay or just not motivated while having sex. I have told him, but he just says he is tired. Idk what to do anymore. He is 25 years old and i am 21.

What do you think?

Edited by sysop for language