[M4F] Looking for a porn-logic type rp around a girl asking a boy if she can use his mouth for birth control. You are my sister/mom/roommate, and I have to eat you out after every time you get a date because you cant take the pills and the men refuse to put on protection.

I would like to play this as if I am helping you out and you really need me to do this so your life doenst get turned upside down with a baby. You are allergic to birth control and porn logic demands that I suck out your creampies so you dont get bred! I would be hesitant and unwilling but then we would both slowly realize we enjoy this. I am open to any other kinks you would like to include, my only limit is feet and vomit, everything else is on the table. I would also like to find a way to include ass eating as well if we can come up with a reason for it!