There's no intimacy anymore..

Have you ever been with a partner who's sex drive has drastically changed over a year? (We've been together a few years in total) Of course the honeymoon phase passes but my drive hasn't changed at all. I am AFAB (26) and he is AMAB (30). It seems once he got close to 30 his drive fell flat on its face and plummeted. It's been an adventure for myself trying to find a new love language because sex IS my love language - I live to please my partner (pls don't judge me thats just how I am and how I've always been). Sex is where I find myself the most intimate, loving, and find that sense of closeness with any partner. Hands down I can say my partner is the love of my life and I'd go to the ends of the earth for him including giving up sex - but sometimes I find it hard feeling that closeness and intimacy any other way because our sex life sucks now.

We have had countless conversations about hormones, stress, etc and he feels he is fine. The usual response is "I just don't feel the need to have sex as often anymore" or "sometimes i get in the mood and then forget".

We are over the road truck drivers together so I know for a fact there is no cheating involved..

TLDR; I've always been this sexual person and have used sex to express my love language and now I'm having a hard time expressing that with my current partner.