Who am I

First, we take an example - If someone wants to surprise you or you want to surprise others. The first thing that strikes the brain is what He or She likes.

?

Here the question mark wins

It's not about the other person who doesn't know you or you don't know about them. If a person really likes or is passionate about something, Then it must be known by the other either by telling or even their actions made them.

You have to know "who am I"