So, when I first got with DH I was pretty against the idea of cum in my mouth.
I’d heard a lot about how nasty it was, horrible taste, texture etc.
I love giving oral though but didn’t fancy the end result in my mouth.
So for years oral for him has been foreplay and he finishes PIV.
Which I’ve fine but I’ve changed my mind and actually I’d like to try it 
But I’ve given him a mental block and he can’t finish!
He gets close but then can’t do it.
I suggested on my face or body instead but he isn’t keen on that.