AITA for acting distant toward my partner because of our lack of intimacy?

Hey Reddit,

I need some advice and maybe a reality check. My partner and I have been together for a while, and our relationship has always been filled with love and affection. However, lately, things have changed in our sex life. The last time we were intimate was a month ago, which is by far the longest we've gone without having sex since were together. We've been together for 15 years now. 

I know he's been under a lot of pressure at work, and I completely understand that it's impacting his mood and energy levels. I don’t want to add to his stress, so I never ask or beg for sex. I prefer to follow his lead because it feels more satisfying when he’s in the mood, and I don't want to make him feel pressured.

But here's the thing—I can't help but feel some resentment. I love him so much, and I want to be there for him, but the lack of physical connection is really starting to get to me. I’ve noticed that I’ve been acting less affectionate and less intimate toward him, hoping he’ll pick up on my signals and realize how I’m feeling.

AITA for feeling this way? I don’t want to be unfair to him, but I’m struggling with these emotions and not sure how to deal with them. Any advice on how to handle this situation would be really appreciated.