Should we shower?

My bf is 17 and I'm 15 going to be sixteen in a month, and we have been together for 3 years. He wants to shower together but I'm really insecure about my body (5ft,6in 125 lbs)while he says he loves my body and he thinks I'm perfect, I say I hate it and I'm disgusted by it (BACK STORY) I'm Mexican and I gave dark hair on my belly, a little on my chest, and back. I was bullied as a kid for the hair on my arms because it was so dark and my ex made fun of me which only made my situation worse. So now I'm really insecure. I don't want him to look at me and be disgusted even though he has seen my body before and swears he loves it, but I don't know?