What you're going through sounds very stressful. Did he help give a deposit or sign the lease on the bigger apartment? If so, it would seem he would still move in with you. If not, it sounds like something he could back out of with no legal repercussions but incredible emotional difficulty for you. If you temporarily go inactive on your other social media accounts it could spur him on to reach out to you. This would be a difficult spot to be in and I'd be upset too. He could still get back to you, but just be prepared for anything. People can be so unreliable. Good luck. I'd like to hear how this situation works out for you, if you want to come back and post again at that time.