Satisfaction

So I have been with my boyfriend for almost 2 years. And in the beginning our sex was fun and spontaneous, then we started going through a rough patch. The sex became a lot less frequent and more like a chore. I wanted it but he didn't. I understand the not trying anything after a fight, giving time to heal/calm down aftwr an argument. But its gotten to the point where i almost feel guilty for thinking about it. The only time we have sex is when we are laying down to go to bed and we are cuddling and my butt rubs on him just right... other than that I feel like if I don't make that little move he will never do it. I have tried lingerie, sexting, teasing him,. But I am tired of getting turned down. I don't feel sexy anymore.

Does anyone have any tips on what to do? I don't want my sexual frustration to start something negative with him, but I am very unsatisfied.