@camcam132,
Hello,
I think Jespah makes a good point, and so do the others. If that first letter wasn't enough to resolve your own sorrows and heartache about this situation, by all means, do NOT try to contact this man with any kind of written communication, particularly not of the digital kind.
It seems that he has no desire to talk to you. Respect that, and don't contact him. Respect yourself, and don't give him anything that he can use as social media fodder against you either.
Without coming down on either side in this discussion, as both parties seem to have reacted poorly, try to look at this situation from his point of view:
The last thing he seems to know is that you ended a two year long relationship by going psycho on him. He has clearly cut you out of his life. Odds are good he will not be pleased to see you, regardless what message you want to convey to him. Given your last comment about what he said to you, he doesn't seem above being emotionally cruel himself.
So I figure he might very well lash out at you, and only wound you deeper. And you'll wind up feeling even worse about this situation.
Just don't go there. So, to reiterate: Respect his desire not to get in touch with you, and far more importantly, respect your own self worth. He's not worth wasting anymore thoughts on. Move on to greener pastures.