First of all, be ready for J. about everyone on here to tell you to get married before moving in together... I know, I don't get it either. I want to test drive the car before buying it, make sure all the features work!!
ANYWAY, maybe he's still thinking that it would have been too fast a move for your kiddo, since that's kind of where you guys left off. TALK to him about it. Don't attack him with 'but WE were supposed to'... J. ask him if there was a reason he chose signing a 1 year lease without you, and what his plans are for the future.
My husband and I moved in together (with my daughters) within 4 months of exclusively dating. Not saying this is right for everyone's situation, but it worked for us. The kids were ready, we were ready, it happened to fall when both of our leases were up, and we found a place we could move into immediately. HELLO! Those signs were too huge to ignore! The rest is history :)
J. talk to your boyfriend. I think you're reading too much into it, but I also think it wasn't fair of him to keep you posted on what was going on, since you had discussed it in the past. This has the means to be a totally product, neutral discussion, so keep calm and don't blow anything out of proportion. Good luck!!