作词 : Meghan Trainor/Josh Kear/Tyler Johnson
 作曲 : Meghan Trainor/Josh Kear/Tyler Johnson
You're my strongest weakness
In withdrawals, I need it
You're my secret fix, you're my secret fix
Need you more than breathing
I was broke, you healed me
Ain't no drug like this, no, no drug like this
Don't you think it's time we cross that lover's line?
Baby, say you'll be mine
If you're all for it, I'm all yours now
If you're up for it, I'm down (I'm down, I'm down)
If you're all for it,
I'm all yours now (I'm all yours, I'm all yours)
If you're up for it, I'm down (I'm down) for you
(Are you up for it?)
The only one I want is you
(Are you up for it?)
The only one I want is you
(Are you up for it?)
The only one I want is you
(Are you up for it?)
I said the only one I want is you
Every time I see ya, instant amnesia
Can't remember life before you (No)
Or anyone before you (Hey)
My minute daydreams ain't PG-13
'Cause I got my hands on you
I want my hands on you
Don't you think it's time we cross that lover's line?
Baby, say you'll be mine
If you're all for it, I'm all yours now
If you're up for it, I'm down (I'm down, I'm down)
If you're all for it,
I'm all yours now (I'm all yours, I'm all yours)
If you're up for it, I'm down (I'm down) for you
(Are you up for it?)
The only one I want is you
(Are you up for it?)
The only one I want is you
(Are you up for it?)
The only one I want is you, whoa
(Are you up for it?)
The only one I want is you
I wanna be the one you want
I wanna be the one you want (Oh yeah, babe)
I wanna be the one you want
I wanna be the one you want (Say)
I wanna be the one you want
I wanna be the one you want (Woo)
I wanna be the one you want
I wanna be the one you want
If you're all for it, I'm all yours now
If you're up for it, I'm down
If you're all for it, I'm all yours now
If you're up for it, baby, I'm down for you
(Are you up for it?)
The only one I want is you
(Are you up for it?)
The only one I want is you
(Are you up for it?)
The only one I want is you
(Are you up for it?)
The only one I want is you