What does it mean when a guy says "I have a dark life, another life, I'm dangerous for you"?

Anonymous
He told me from beginning "I'm not good for you" Month later he said he's falling for me and he's afraid with tears on his eyes. But he didn't want to let me go easily. So he sold me a dream but started to flake on me I told him to stop but he couldn't so he ghosted. 4 months later I confronted him.

He's poor Polish he was taking care of me. And used to give me money/gifts/drive when I was broke without a family.

What was all that about?
Updates
+1 y
He told me he has mental issue & he told me he was a drug addict but I am sure he still uses cocaine behind me.
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+1 y
He is fucked up with debts so he got a 2nd job.
What does it mean when a guy says "I have a dark life, another life, I'm dangerous for you"?
9 Opinion