Finding sexual attraction again.

My boyfriend and I have been together for around 8 months now. The other day we were sitting together cuddling, and kissing when I realized that I was very sexually attracted to him, this may sound normal, but it wasn't for me. Ever since I was raped, I have found it impossible to be sexually attracted to anyone. (because of the horrifying memories that come with sex) Part of me feels like I'm somehow betraying myself for being ready to move on, and I don't know why. Can anyone help me?