If a girl is on top or on bottom, the guy has full penetration into her and has no motion and is not thrusting into her. Instead they will hold each other and cuddle.
Guy: Hey! Lets have sex tonight! i have been wanting to fuck you all night.
Girl: i am not feeling like it tonight babe, can we cuddlex instead?
Guy: is there a possibility of sex afterwards?
Girl: maybe :)