Exact same situation here, though we have showered together ages ago

. Every once in awhile I drink enough to shake things up, which I think he seems to have appreciated, but I have a hard time doing that sober (largely because of the lack of obvious encouragement -I feel a bit of a fool) and don’t really like drinking that much.
I’ve certainly tried talking to him about it, but he is so closed off and uncomfortable those conversations go nowhere. It’s very frustrating. For us, it’s mostly a communications issue - he’s really bad at opening up about anything. Every few months we have the same (one sided) conversation about how I’m feeling and he try’s a bit for a while. I kind of knew what I was getting into when I married, and he has many other good qualities, but it’s still a downer.
Also interested in advice if anyone has it. Reading the 5 Love Languages book helped me a bit long ago to better appreciate the ways he demonstrates his love (no sexy comments, but he goes out of his way to do things to make my life easier). Occasional weekends away together also do us well - he doesn’t push for these, but once we’re alone in a hotel somewhere, the sex does gets better.