Help!!!

So at the beginning of summer I broke up with my boyfriend of two years. We are now back together and I love him more than anything but our sex life is really off and I don't know what to do. I know it's all me and I feel weird about it because he gave me Chlamidya over the summer but I just don't feel like having sex with him ever and I don't know what to do. I don't want to have sex with anyone else I got that all out of my system this summer (probably too many guys lol but I don't care) but yeah any advice???