he visited once. I bought some BTC from him and he paid cash to me.
If you bought BTC from him, why was he also paying you in cash? Regardless, you just said earlier in this thread that he visited you to pay back the loan you had given him:
Anyway, after taking the loan he was one or two days late to pay me back, I was waiting and saw his account was not logged in for few days too. So I called and he said his account got hacked but he will give me the money back. Which he did by the way. He even came to my house to see me.
Which is it? He visited you so you could buy BTC from him or so he could pay back his loan?