Men who don’t want to have sex with the woman they are with, are not automatically “gay” .
Secondly, sex and desirability is a mental thing. What is the dynamic of your life together? Did he , and you, love sex before being together ?
You say you don’t cuddle, you don’t hold hands. While this is not at all essential to wanting sex (I’ve not held hands with everyone I’ve desired or slept with!) I think it could be a real barrier. as you’re saying, there’s no intimacy on any level.
My fear for you is that life, in its everyday and humdrum sense, has taken over to the point where the rest of it has no room.
I’ll go back though to the question at the top of my post. Did you enjoy sex before him? Do you visualise and fantasise about sex, have you strongly desired people before, do you indulge in this line of thinking if you’re on your own so to speak?
If none of that is the case, then your desire to do the deed will be so totally linked to him as a person and your interactions and wellbeing together, that fundamentally a lot has to change for you two to be sexy again so to speak.