I'll second Scotty on this, C2, as I clearly recognize the distancing behavior I've had. I recognize the avoidance and the wish for everything to appear "normal". Indelicately, it's a load of &*^$%! Since you're quite aware of how the behavior's affecting you, imo, you're anything BUT clueless.
The only caveat I'd make is that if you decide to move on - particularly as you've two years invested - you'll have to stick to your guns...and that may be difficult those times when you're feeling lonely. Keep friends close to you - your friends, not his - who will support you.
It's perfectly okay to get on with YOUR life.
@scottyg - beat the Christmas rush? LOL