I completely agree with cdnomore.

Just out of curiosity, how long did it take you to respond? I assume this was through text or a message. I always try to made myself a promise that if he ever got in contact with me after being distant for a while that I wouldn't immediately jump on the message. That reeked of desperation in my situation. But it never worked. I think it's a good strategy to make yourself wait to reply. That might actually make you realize that you might not even need to reply; that it's not necessary and then you can break free of what is potentially damaging you further.