I really think this guy is just confused and going through a hard time in his life. I would still be cautious on living with him. I wouldn't do it if I were you.

Things seem to be moving really fast after he says he wants to be cautious. Which tells me he's confused on what he wants. He may very well be happy with you, but he is still very emotionally attached to his past.

I honestly think all the things you ha mentioned are red flags and I would be hesitant to even get involved with him.

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