FG, if I had a dollar for everytime my H told me he hated me, I'd be rich.
No, he does not mean it. Well maybe at the time he said it he thinks he does, and probably hates the whole world while he's at it, but deep down I think they hate themselves.
He just says he hates you because you are not playing along in his fantasy world. In their fantasy world they think everything should go their way and when something doesn't, they hate the whole world.
In other words, they are just plain nuts!
I know it's hard, but try not to take it too personally. He is just throwing a tantrum like a 2 year old. Just like when a child is in a store and wants something and the parent refuses to buy it and the child screams out "I hate you!"