Kudos for admitting it.
If you don't want to spend your life alone ( which is a perfectly valid choice!) I suggest "adjusting" your expectations.... beauty really is "only skin-deep".
I'm basically stuck cleaning family-wrought messes(nothing malicious, just a load of things to do). So, by deafulting. I'd probably be on the road to a divorce simply by not having the time to fully dedicate my attention to a spouse and kids.
It's not really about expectations. It's the semi-automatic response of attraction just doesn't activate that much, even in high school when everyone was wearing revealing clothing. I'm just not a horndog that would go after an entire room.
Since I'm also getting older...I would not be surprised if my biology becomes much more tolerant. My dad had me at 55....and my mom was pushing 40...
Then again...I got my mom's "non-horny and familial loyalty" genes. She has never sought another man for any level to relationship; part of it(about 20 years ago was committing to legal battles to obtain custody of her kids and claw back guardianship of her mother from state, all while having English as a second language and only a 7-Eleven job at the time. So maybe I just go totally limp.