your ex comes into your room asking if she can talk to you, she is moving out soon and she wants to explain how much she misses you, she doesn't want to get back together...supposedly .. but misses the sex. she wants to fuck you one more time before she leaves. she knows she can seduce you with her body and won't take no for an answer. she knows you miss fucking her raw. you can't help it - you fuck her and she wants you to cum inside of her! you tell her you want to cum on her instead.. after you leave the room, she gets 'cleaned up'. your ex starts to gather all of that cum, sucks it up with a suction cup and starts to pump the cum inside of her. you walk in and ask her what she is doing - she tries to lie but quickly realizes that is doesn't matter because its too late... "the cum is already in my cervix and you can't do anything about it"..