Sex is a gift, not a weapon and it really feels like sex, in your relationship, is being used a controlling device (meaning, you want sex and your husband doesn't give it to you and then you go out and get it from someone else and now he really has ammunition not to give it to you). You both do need to sit down with a marriage counselor and figure out why the power plays are going on here, why you two aren't both anxiously anticipating being together, joining souls, building that intimate bound.
Sex is magical and if it isn't magical, it shouldn't be done and if, at the end of the day, you decide sex isn't magical with your husband (which is why you definitely need the counseling), then you need to choose differently...
Unhappily Married