My famoust last words

Let me know what I've done wrong
When I've known this all along
I go around a time or two
Just to waste my time with you

Tell me all that you've thrown away
Find out games you don't wanna play
You are the only one that needs to know

I'll keep you my dirty little secret
Don't tell anyone
Or you'll be just another regret 
Hope that you can keep it
My dirty little secret

Who has to know?