Again, I'm sorry. Not knowing is terrible. Personally, I think we all deserve to know the truth. But it doesn't matter now, cause even if you don't know why, you know what. And what it is is that it's over.
These were all very small things. Even if he did get upset about those things, they don't really matter. Your personal opinion of a movie, your personal opinion of a restaurant. Wtf. If he did let these things rule you out of his life, then I'm thinking he wasn't that interested in the first place. It wasn't something you did, or didn't do. And I don't think you're a horrible person. Maybe he's doing you a favour by giving you the silence treatment. That's your answer. Take it and run. I don't think you have much it gain by analysing this situation. And even if you did, would you want to be with someone who treated you this way?