How do I fall asleep with boyfriend?!

I'm very annoyed because I can not fall asleep in the same bed as my boyfriend. He wakes me up all night and when we cuddle I feel smothered. He keeps his arm under the pillow all night and always has his arm around me tightly. His body is always right up against mine with no space to move. I have to stay in the same position all night, on my side, which isn't very comfortable for me. I have had other boyfriends who have slept in my bed with me and there were no problems. What do I do about this? I need my sleep or I get cranky and short with him.