He makes NO noise during sex

My S/O is one of the most tame lovers I’ve ever had. We don’t have extremely passionate or varied sex but it’s always fulfilling. However... this man makes zero noise. I’m not saying he needs to be porn star moaning and groaning but not even a change in breathing. 😅 He is an absolutely silent man during sex, period.

Talking intimately? Never during sex unless it’s me. Auditory responses? All me. Am I missing something?!?! It makes me feel like his enjoyment is limited and I’d like to bring it up without making him feel attacked. We’ve navigated some very intimate things together but this is such an awkward thing to me. Any suggestions on how to create a comfortable way to ask, “Have you noticed you’ve never made a noise in the 5 years we’ve been together and it weirds me out a bit at this point?” (Not those direct words of course!!)