Originally Posted by
seordin
Do you want a fix or do you want to worry about it so much that it makes him feel self-conscious and impotent? He doesn't know what to tell you so he blames it on PTSD, but what you both probably don't realize is this has a lot more to do with feeling a lack of sexiness. Routine is boring. That's why in the beginning, a new partner is more arousing. I'm guessing the first time he couldn't get an erection (which is completely normal from time to time), you said or did something to make him self-conscious. So don't mention anything about his sex drive or about feeling unwanted or else you'll just make it worse, and keep him embarrassed to try. If you instead spend all that energy making him feel sexy (yes it sounds weird), making him feel desired and wanted, then he will reciprocate, especially if you are spicing things up. Keep him guessing what you'll do next, and behave with sexual confidence instead of that insecurity that will ruin the sex in this relationship altogether.
By the way, guys get multiple erections during sleep, and it's nothing to do with the bladder being full. It's for keeping erectile tissues healthy. Some people even take Viagra before going to sleep for this purpose.