Crushes

Crushes can be friends, right?
Together we can have fun and
delight.
I might be your secret admirer,
But I'm closer than you think,
There is one single person whom
is our link,
Can you guess who it is?
If you can you'll know who I am,
When you find out who I am,
It will hit you with a BAM!
I don't want our friendship to end,
So if you find out who I am please
still be my friend.