I agree with 1st responder.No man leaves a woman because she is not not as forward as he.This is a common difference between men and woman.

[He says I checked out of the relationship a long time ago and he's at the point where he's not waiting anymore.]

The above quote may be moreso a factor.But,you failed to share...he is ..."waiting" for what?

I think alot has not been said here.There are other things causing this problem.