
ik it's hard but if you're not attracted to him like that then you should find someone who you feel attracted to (and he should too...) cause let's be honest waiting it out or just trying to push trough it won't really help, it's better to be honest and try to move on and not waste time, especially if you don't feel comfortable... and ik it's probably hard to tell him that and explain it but only you know how you feel and he needs to respect that.
I think this is a bit of a black and white take tbh. I'm asexual and I have a very fulfilling relationship with my partner who is not asexual. it's very possible to still have a great and loving relationship even if only one party experiences sexual attraction. this situation is a bit different since it seems neither of them entered this relationship knowing that this was the reality, but it doesn't mean they're doomed