Don't know what I'm doing anymore - Help.

[Dom R]

I'm not suggesting that you should honor his out-of-left-field requests like "I want to see you naked right now." That seems, pardon me for saying so, childish and controlling of him. Maybe you could say something like, "Ha, what do you think I am, your concubine?" Refuse, firmly but nicely, like you would to a 2 year old in your care.

you seem to be saying, "say no, just to say no".

That doesnt seem like a loving attitude to me.

if a spouse asks for sex every night.. and their partner may not neccessarily be turned on at that moment, but is "ok" with it.. seems like they should say "ok". Not say "weell, we already sex 4 times in a row... so I'm going to say NO, just to prove that I can".

Saying no, just to prove that you can say "no", to me, is the more childish behaviour.
Literally. It's like a 3 year old trying out saying "NO!" just to say the word.