Ok, here goes...I'm in love with a man who lives 600 miles away. I've known him for several years and we've dated off and on. We're doing very well now, and I'm considering moving to be with him, which he's all for. He's mentioned starting a family, (neither of us has kids) but hasn't asked me to marry him. I feel I can't move that far without commitment. How do I broach this topic with him without scaring him?