How did we get here?
You showed up solo but I know she's at home
And you're actin' so sincere, sincere
Sincere (sincere)
I was thinkin' 'bout leavin'
Makin' up a lie 'bout how to say goodbye
To stop you, boy, from cheatin', cheatin'
To stop you, boy, from cheatin' (cheatin')
Stop pretendin' she's not sendin' fear straight to your phone
It's so temptin', no good endin' with you and me alone
Tonight I'm kissin' my ex-best-friend's ex-boyfriend, ex-boyfriend
Tonight you'll both be sayin' my name
Like I'm to blame and it's a shame
Ex, ex, oh, I'm not sorry
Her text won't, won't stop me
Tonight I'm kissin' my ex-best-friend's ex-boyfriend, ex-boyfriend
Wasn't thinkin' how she'd feel
Shoulda known she'd be pissed when she heard that we kissed
But you said, "What's the big deal, big deal?"
You know that you're the worst thing I could steal
How'd I do this to my best friend?
'Cause it's not my style to fall for a smile
But we're gonna make a mistake, mistake
Gonna see a heartbreak, heartbreak
Stop pretendin' she's not sendin' fear straight to your phone
It's so temptin', no good endin' with you and me alone
Tonight I'm kissin' my ex-best-friend's ex-boyfriend, ex-boyfriend
Tonight you'll both be sayin' my name
Like I'm to blame and it's a shame
Ex, ex, oh, I'm not sorry
Her text won't, won't stop me
Tonight I'm kissin' my ex-best-friend's ex-boyfriend, ex-boyfriend
Someone's gonna get jealous (ooh)
Someone's gonna get hurt (ooh)
Someone's gonna get lucky (hey)
But it's not gonna be her
Tonight I'm kissin' my ex-best-friend's ex-boyfriend, ex-boyfriend
Tonight you'll both be sayin' my name
Like I'm to blame and it's a shame
Ex, ex, oh, I'm not sorry
Her text won't, won't stop me
Tonight I'm kissin' my ex-best-friend's ex-boyfriend, ex-boyfriend
And I'm to blame
Ex, ex, oh, I'm not sorry
Her text won't, won't stop me
Tonight I'm kissin' my ex-best-friend's ex-boyfriend, ex-boyfriend