Too comfortable

My boyfriend and I have been together a year and a half. We’ve been doing long distance for 7 months and it hasn’t been easy but I felt like we would always make it work. He’s moving to my city in a few months so I’m looking forward to that but a few weeks ago he sat me down and told me that he’s unsure if we are meant to be. I asked if he was breaking up with me and he said I don’t know. The next day he said his doubts were probably from our fighting and that it would be fine in time.

We’re still together and I feel like he’s trying to pretend everything is okay but I have a feeling things are still off and I don’t know what to do. Now I’m having doubts too but I don’t want to let it go yet. How do I make this work? I’m trying to be patient but knowing that things are off is driving me crazy.

Thanks!