I'm glad you stuck to your boundaries...I'm sure this is quite a loss...just remember that its ok to vent...remember the hard work will not be to talk about how he needs to grow and change and him being alone for awhile and wallowing in his mistakes and hitting rock bottom...

It's more about you looking at yourself learning about assertiveness, boundaries, what you want from someone and not settling because he is the "first" or second or whatever...it's actually your chances at growth that would have been impeded should you have stayed that you should be concerned about...not his...

Does this make sense why I keep coming back to this?