Well, I have seen copy of Rudolf's final letter, where he states - 'I peacefully go into death....'. (
Here is the link.)It indicates our fantasies in heads that he wanted to die. So badly and as soon as possible. But he terribly needed someone who would follow him ; Mary's wish for unity with him was his feed, I must admit. And it would be kind of a symbiosis between them two.
I do believe in her 'love' towards him, almost mesmerized fallen in love girl she was, but I don't believe in his love towards her. He was older ,matured and experienced. It seems to me that he could hypnotize her with his words.
When I saw his drawings he did, at age 6, I was supposed to see bloodshed in all directions over the paper. I was really shocked. What kid at age of 6 would do drawings like those? Maybe I even did, I can't recall. If there two shots could be heard at Mayerling, then I am 100 percentile right that at least ONE of them was MURDERED. Either Mary by Rudolf, or he by himself. (bit humorous I know).
I am not the one who can blame him, but I hear some labels him like a coward. I will remain untold, since I don't know what can I say. They met in the end of 1888 and ended their ballad three months later. I dislike the relationship between Rudolf and his father, they were misfits in others eyes. Unlike Sissi, who knew his soul, in and out, from toes up to head. I wonder how must their parents have felt...
But everything in life we do , we do for only one purpose - to be happy. Sometimes we are right , but sometimes highly wrong. I know it is hard to fight for someone/something who/that means to you, but how important it is to save it. And I understand him too - he did something he had thought he would be happy afterward. Is that selfishness or not, I really don't know.
And there is one thing more - coldness at the Court he couldn't bare with. He wanted to escape, and he did. But he couldn't escape from himself. Gee, I never thought I would be interested into Hapsburgs. But anything's possible.

Who is Rudolf now?
Bit....to make smiles here.