The rules of finishing in a marriage

Maggie
Is there a rule some where or something that says if your wife make you finish you should probably do the same for her... I am about to give up on him... Every time we have sex he always finishs and I'm never close so once in a blue moon he will eat me out but he asks and that's just a turn off I want to know that he likes it and just wants to do it because he wants me satisfied to.... What are your thoughts... Thanks for listening to my rant