Well at least TELL her about it green. If she's not interested in more sex, and that is a dealbreaker for you, then there are two options. You're both happy with the situation of you getting a little something on the side discretely with her knowing about it or you tell her how much of a dealbreaker it really is for you and you two break up.
What you're doing now is cheating, it's not fair to her. A relationship = two people together. Right now you are making the decision for her, not giving her a choice. Stop being selfish. It will not end well that way.
What you're doing now is cheating, it's not fair to her. A relationship = two people together. Right now you are making the decision for her, not giving her a choice. Stop being selfish. It will not end well that way.