How to play hard to get?

So I’m pretty sure my husband has a denial kink.. He wants what he can’t have. So he’s not as interested in me when he knows that I’m down to have sex anytime he asks. After I gave birth and wasn’t allowed to have sex he was SO into me, like I’ve seriously never seen him so horny the entire time we’ve been together. He was constantly talking about how he ‘couldn’t wait to be able to fuck me again’ Now that I’m healed and everything we’ve had sex a couple times, but it’s like he couldn’t care less if we do or not.

So, how do I make him want me? How do I play hard to get, when I’m really not? I don’t know how to tell him no when he (rarely) asks because obviously I want to have sex with him! Lol. Ugh.