Not comfortable :(

So me and this guy who I really like, we have been having sex quite a bit but I just feel so insecure about myself, he always wants to have the light on and stuff but I just can’t bear the thought of him seeing my body and face. It’s just awful and and I can’t help it. I end up not being able to do what I want with him because I’m too scared. I have done stuff with him and he’s seen every part of me but I still feel insecure and I just want to be able to feel comfortable in myself to make it more enjoyable