I'll Love You If . . .

What does it mean when your parents say "I love you"?

I was always confused by these words. People always talk about unconditional love. I have no idea what that is.

For me love always meant that something was wanted from me.

I'll love you only if you listen.
I'll love you only if you do what I tell you to do.
I'll love you only if you do well in school.
I'll love you only if you hang out with the "right" crowd.
I'll love you only if you look pretty.
I'll love you only if you make me feel good.

Can someone explain to me what unconditional love is?