We can't generalize and say "Im too busy, not ready for a relationship" are the most common excuses so it's inevitably the case for him. I don't understand why you fix a label for each thing done or said...
Just because many guys use these sentences to end a relationship doesn't mean my bf does.
He has already broken up with me, so why couldn't he break up with me this time either? He has already been the "bad guy".