co sleeping??

is it normal for my boyfriend to let his 8 year old son sleep with us when I sleep in a shirt and panties in our full size bed. I get annoyed because it's a tiny bed for 3 bodies but am I just being a bitch or is it weird? he has his own room and bed but he always comes and sleeps with us in the middle of the night and my botyfriend let's him squeeze in bed with us and then yells at me to scoot over because he is squished and I won't because I don't wanna be uncomfortable because then I can't sleep.