Intimacy is very underrated in its non physical form. The pleasure of exploring someone's mind and having intricate conversations does get lost over time.
Cancer seems to trigger conversations that reveal personality aspects that have fallen dormant or may never have been explored--it certainly has with my relationship. The problem is the atmosphere is so laden with uncertainty and fear. My brutally fatalistic attitude works well with my partner's gentle optimism in many ways, but not when the stakes are so high.
It's only been in the last couple of weeks, as I was reaching the end of my treatment, that the pressure is starting to come off and we are seeing how much closer the experience has brought us. Those fraught conversations, so often had in the car, have born fruit that is in no way as bitter as the environment it grew in. We will quietly enjoy that bounty, curled up in bed on a rainy morning or walking single file up a bush track. I don't think we ever tell out of love, but we stopped being intimate. That is changing, it's a lovely thing.