And if you should be foolish enough to marry him, he'll be yelling at you even more. He'll think he has a husband's right to yell. Plus he'll think as the elder he can control you. Of course it's very seductive when a man claims to worship the ground you walk on and calls you his angel and his princess. But get a grip.
Talk is cheap.
And look who's telling you all that. An obvious con man who knows exactly how to wrap you around his little finger. Of course he says he's innocent. Most men who are incarcerated do. Break this engagement before he gets out and tell him there's no way he can come and live with you.