Weird break up with long term boyfriend

Zoe
My ex and I had been dating for a year and a half, and I'm in my first year of college. He called me and told me he needs to be alone for a while, that long distance was harder than he thought it would be and that he didn't think he could be a good boyfriend "right now". He also said that he wouldn't be opposed to us getting back together in the future. We still love each other. I've decided to give him all the space in the world, and I know this is the best thing right now.  I want him to be happy even if we can't be together. But I keep thinking about what he said about getting back together. This has been the worst breakup of my life, I cried so hard my eyes swelled closed for hours and I can't sleep or eat, I have a constant stomach ache and chest pains. He's my best friend and my boyfriend (don't worry, I have an actual best friend who has been helping Me through this) and I find it so hard not to talk to him. In the summer he'll be moving closer to me when he goes to college, 6 hours from me. I think I should be trying to let him go but I keep thinking about how he "could see us getting back together", his words. Maybe he was just trying to make it easier on me, but I almost wish he hadn't because I can't stop thinking about how there might still be something there. We're very close and I am struggling to let him go.