Hi daring,
I suggest that you keep the no ML boundary. The teasing is OK, I think. Remind him that part of what he is giving up if he can't commit is the intimacy that you have shared for so long.

On the maybe good news front, I read here a while back that when the MLC is coming out of the tunnel, it IS common for them to cycle through all the stages, not staying long in any one but as they progress, they will "close the door" forever on each stage until they come out the other side. Hopefully this is what is happening with your H. Just be careful at this stage as you can easily cause them to run and hide longer in any one of the stages. Patience is sorely needed at this time.

Keep up what works and don't let yourself do anything that you know you shouldn't. Good luck, I'm rooting for you!