You locked them into a commitment then withhold something they need what do you expect
The point is to love them enough to show concern when something unusual in behavior happens.
What if you have asked and expressed concern. Then what if they still withhold? Sometimes a good old hj is all that is needed. That doesn’t take a sex drive to do.
Yes, it does. It does take a sex drive to give sex acts of any kind. I personally get nauseated at the idea of sex acts unless I am interested in said sex in general. And if that is the case, just leave; why torture someone with cheating?