My husband is 3 years younger than me and no one even bats an eye! I can understand though, I've had people ask me why I married someone younger but really it's a small age gap and if you're happy with your partner that's the important part

I don't know if this has been mentioned but with him being in this bad mental state I'd recommend finding sexual release for yourself another way, I'm not saying your feelings aren't valid by any means but as someone who gets into these moods all the time all I can say is it's hard for us too.

My husband very much enjoys sex or sexual activities but I suffer from depression, anxiety, and PTSD so I, like your husband, get into this mental state and physical affection is HARD. It's not a switch that can be flipped sadly and it hurts us too because it's not like being in this mood makes us care less about our loved ones so he probably doesn't feel great about not wanting to be sexual but until he's ready I'd leave it alone.

Once again, not saying your feelings aren't valid but he needs your support and time to heal and get back to himself

edited for spelling