I cant keep a secret

I'm bittersweet
I will knock off of my feet
And you can't help your self
You don't want anyone else
I'm a mystery
You are too much for me
But you keep coming back for more
I'm just the girl you are looking for
I can't keep a secret
For more than an hour
I run on one hundred proof attitude power
And the more you ignore me
The more you adore me
What can you do for me???
You will do anything for me