Lyrics:

Could've been so easy
Could've been a friendly phase
Yeah, it could've been simple
Could have, it should have, but that's not the case
Tell me, who are you to be calling me names?
You're making yourself the fool
Ain't that a shame?

You can call me liar, cheater, loser
Takes one to know one
You can say I'm bitter, call me quitter
Takes one to know one
Yeah, it takes one to know one
And I know you

Now you're pointing fingers and the point is lost on me
Do you hate to see me happy?
Does it fill you with jealousy?
What'cha trying to prove by putting me down?
Sorry, the joke's on you, like tears of a clown

You can call me liar, cheater, loser
Takes one to know one
You can say I'm bitter, call me quitter
Takes one to know one
Yeah, it takes one to know one
And I know you
I know you, yeah
You can call me liar, cheater, loser
Takes one to know one
You can say I'm bitter, call me quitter
Takes one to know one
You can call me liar, cheater, loser
Takes one to know one
You can say I'm bitter, call me quitter
Takes one to know one
Yeah, it takes one to know one
Yeah, it takes one to know one
And I know you

Could've been so easy, that was not the case