Ali and K. i don't know if this is a female thing....there seems to be a recurring theme....."she is nothing to him now"....why is this important? Even if that is true, I do not get what that changes, unless K wants back in. I am not sure you can end a three year relationship and say that the other person is suddenly nothing.
Again it boils down to the same question; in or out? It always does. If you are out K....truly out...then avoid him (other than the obvious times when the kids need to be transfered).... that will help you as well I think. If you are in...with conditions, or are not 100% sure, then you guys may need a sit down or a retreat like BBJ and Dan.