I think my husband is gay.

I need some advice ladies. My and my husband have been together 3 years and we have a wonderful relationship. I love him very much and he's absolutely everything I wanted in a man...except our sex life has always been horrible. 
Before me and my husband we're officially dating I went through his phone and found email after email of him chatting to transvestites from Craigslist and backpage. I freaked the fuck out and noped out. Left his house in the middle of the night. He called me the next morning wondering what happened. I explained I went through his phone and what I saw, he claimed he never actually met with any of these people. I eventually got over it but always in the back of my mind I feel he's just not attracted to women. He doesn't want to have sex with me and when we do he only wants anal. The few times we have sex a month it's never peen in the vag. He'll occasionally eat me out my mostly spends his time on the back door.
What do you ladies think?