If your partner does not respect you then you have no real partnership. The question you should ask yourself is whether or not you are worthy of respect. If you are, then you will do what I suggest, if you're not then you and your partner have something you can agree on.
Now what I suggest to you is something that I am doing myself right now...I told him it was over and whenever he wanted to leave me I would wish him the best. He hasn't left yet. I also keep reminding him, under no uncertain terms, that he is not the only man to take interest in me. I'm not seeing anybody else, although he's already asked me, I'm just taking a break from men for awhile including him.
So take a timeout on the relationship to focus on what you really want from your partner, for your life, and for yourself. Spend some time alone doing something you love to do, and most importantly, cut out all sex. Abstinence is a perfect way to get your head straight. Your thinking will be clearer, you'll gain more confidence, and your partner will notice.