He had a really good deal with you, and that's very tough to replace. You gave everything you could, while he gave you what little he could spare after he met all his own needs. In a way, you created a monster. If for any reason you interact with him, make yourself as boring as possible. You want him to lose interest.

He's in an actual rage. Here's a link: What is Narcissistic Rage? « The Narcissist at Work

I'm not saying he is a narcissist, or that this article is a perfect description of him. (I don't know him.) But - take away what resonates, and some of it should.

An excerpt:

Narcissist never, ever, ever let go of their supply. And if that “supply” leaves them to the point they can no longer control them? Look out.

Nevermind what any mutual friends may, or may not, think. This is between you and him.

Respect for you? You see now how you only count to the extent that you fulfill his needs. That is the reason for your existance - in his mind. A man at the level of maturity that is normal for age 28 can accept that a relationship of one year's duration is being ended. He can be sad, but recognize that your goals are not compatible. He knows perfectly well that he could have saved the relationship, by making certain sacrifices. How dare you put those requirements on him!! How dare you!! That's his mentality.

No doubt people who know him are concerned. Not getting what he wants from you is a disaster for him. And there won't be women lining up to take your place. Sex is easy enough to find, but he wants complete devotion. He probably had a mother who didn't satisfy his needs as a child, or who over-indulged him. Now whatever woman he is with has to spend her life making up to him for that. Not much of a life for any woman.