How are things going? If you're still together, I'm sure you're still sorting things out as this is not ever going to be a straightforward solution kind of relationship. I would focus on asking for more communication, such as telling you he'd cancelled the ticket, but I would avoid anything...
I don't have answers, but the refusal to do anything you suggest and not sharing with you is very familiar to me. One thought I have is that he sounds depressed right now, and depending on where you are, that could partly be seasonal. It could also be due to being isolated due to being on leave...