@Swingfromthemountain If he has no underlying medical conditions (did he get his testosterone checked?) It's possible he is unknowingly asexual. Do you know if he has had "working" sexual relationship with anyone else?
However, assuming he is not asexual - @AubadeIsIt is completely correct – what is all this no foreplay about?
Does he not understand he needs to get your motor running as well?
Maybe you should have a no PIV policy until he learns how to pleasure you…
You don’t say how old you are, but if you decide to move on, don’t be scared of dating.
Is the possibility of spending the rest of your life with a man that doesn’t appear to care about your pleasure really worth the concern that you won’t find someone else?
Yes, it’s a minefield, but people in their 60’s and 70’s are successfully dating again for the first time after much longer relationships, so you won’t spend the rest of your life alone.
if you want to stay and try, and he is so embarrassed, which at his age, I can kind of understand, you could always go to the chemist and buy Viagra for him.
Not as a long-term solution, but as a once off to see if they help.
Calais, which lasts longer in the bloodstream, should be available as a (probably private) prescription from his GP)