I think you did well with that, if you think of it as you were mtg a friend to Christmas shop and forgot to invite your friend it isn't really a lie. I don't think you have to do anything other than what you are already doing. See how leaving "abruptly" got him to text you. Detaching is working.
M 33 W 29 S 4 M 5 T 7 11/7/11 Separation, W moves in with parents 12/1/11 W: "IDLY, I'm not coming back, it's over" 1/7/12 D Bomb Dropped