One of the most common complaints in marriage counselling is women that DID oral before marriage and after the ring is on the finger, they do not do it. Major cause for divorce. My wife used to do me while I was driving down the highway (on her own). Now she says that it is gross, that it hurts her jaw, that she will throw up if she trys. True intimcy in marriage can not be achieved without great head.
So what would a marriage counsellor do? I don't want my wife doing something she does not want to, but I also believe that my expectation of head (with swallow) is a legitimat position. And it seems clear that plenty of women on her enjoy doing it.