Answer:
A closed book.
Explanation:
Yes, I'm pretty much a closed book. I never initiate conversations with new people, or even with those who I know.
You may know me, and pass by me but I'd not care to say a ‘Hello’.
But, open me for once (which is a difficult task), and I can tell you almost everything:
• What I like
• What I don't
• Why I'm the way I'm, etc.
But more often than not, I'll stay closed. Don't judge me, it's not that I hate you. It's just that I've been judged too often for speaking my heart out. People who are extremely extrovert and outspoken don't realise that some people don't like to speak their heart out. That's just how we've been built.