“Thanks for your input but im not questioning his sexuality. I think there would be more obvious signs.”
I’m curious what more obvious signs you would expect to see. To me, very rarely having sex with you during the entirety of your marriage, rebuffing all of your attempts to initiate sex, being content not to have a higher frequency of sex with you since he also rebuffs all of your attempts to persuade him to address whatever problem so that he can have more sex with you — those seem to me to be the obvious signs.
I don’t see that him saying (or thinking) that you are an extremely attractive woman has bearing on his sexuality. I see men whom I recognize as being extremely handsome and fit men — I still have zero physical attraction to them.
I don’t doubt that your husband wants to stay married to you, likes or even loves you as a friend, enjoys being a father, treats you well, apart from lack of sex and unwillingness to discuss that subject. That says nothing about his sexuality or the big question: does he have any desire to have sex with you?