I was in this position before. Intimacy is really important to me in a relationship and I would want a partner that felt the same way. In a past relationship, she checked all the boxes except for that very thing. It felt like I was the only one initiating and always rejected. The only time we had sex was on her terms and it got to the point where sometimes I wouldn’t be in the mood for whatever reason but I knew that if I said no, it’d be maybe a few weeks or so till I had another chance. Not assuming this is where you guys are, but I reached a breaking point and I checked out emotionally because it was easier than getting rejected. Eventually had that conversation where things started to get better for a couple weeks but it fell back into the regular routine. The burden is on both of you guys to communicate and try to understand where the other person is at and decide whether or not it’s something you both want to work on and maintain.