is it normal to ask ur partner to only have sex with you

stand your ground and tell him "fine im selfish if you do like it so much theres the door. you can have as much sex and with who ever you want on the other side of it cause clearly im to selfish and not enough" then u run away crying and eat ice cream, watch life time, and change your face book status to single. then the guy that has been crushing on you see it and send you a massage but you thunk nothing of cause he's always been a friend so you have a coffee with him and things are good. suddenly your bf see you two together runs up and say he sorry he was stupited dont leave him you think it over you look at your friend tell him coffee was great and go back to your bf your friend is crushed but puts on a smile and cheers you two you walk away feeling a bit sad but believing you made the right choice a couple weeks later you two are fight again but its not been a couple weeks its been years and your both are miserable and have kids and hes cheated 3 times but he know you wont go causes of the kids and you hop on face book to see your friend update his status to seeing some one and at that moment you finaly realized