OK! Im totally lost here.

There's a guy that I have feelings to during my secondary school. He did show out that he too, have feeling to me. But the thing is we did not start a relationship. I give up on him since he didnt take action after a long wait.

After i graduate, we've lost contact for around 3 years and now, he suddenly confessed to me asked me "Can you let me be your bf for 1 day?" I rejected his idea.

He told me that he do not want to start a relation with me because we're from different world. So, what does he want from me now? Why 1 day relationship ? Why suddenly confess to me after so many years? What is he thinking ?

Any guys can help ? Really appreciate it if anyone can enlighten me.. Thanks in advance