You were headed off to college,

  and we were just eighteen.

  You waited ‘til you saw my mother

  busy with something or other,

  said we wouldn’t be seen.

  I figured it was now or never.

  Wasn’t really sure what I’d even miss.

  But I thought, what the hell,

  I won’t squeal, I won’t tell.

  I mean, it's only this one kiss…

  It was just this once! (Just this once!)

  It was a one-time deal.

  I didn't think I would love it,

  but that's quite enough of it.

  Babe, we gotta be real!

  (Gotta be real!)

  I mean, I guess if I'm being honest,

  when the mood just snuck up on us,

  I'll admit, I didn't want it to end!

  Oh, but it was just this once,

  and we're not doing this again!

  Na, na, no-no, no! (Look, I can’t, alright?)

  Na, na, no-no, no! (It’s not gonna happen!)

  Na, na, no-no, no! (We’re just friends, okay?!)

  Na-na, na, na-na, na-a-a-aah!

  I tried to keep my distance,

  but I could tell you were crushing.

  Gave me an eyeball caress

  in my new pink mini dress,

  You could be reading stolen content. Head to Royal Road for the genuine story.

  and I just couldn't stop blushing.

  (Look at her, she’s blushing!)

  Soon as you got me alone,

  you put your hands on me.

  Must have been out of my head,

  because we wound up in bed…

  The rest is history!

  But it was just this once! (Just this once!)

  It was a one time deal.

  I didn't think I would love it,

  but that's quite enough of it!

  Babe, we gotta be real.

  (Gotta be real!)

  I mean, I guess if I'm being honest,

  when the mood just snuck up on us,

  I'll admit, I didn't want it to end!

  Oh, but it was just this once,

  ‘cause we're not doing this again!

  Na, na, no-no, no! (I already told you!)

  Na, na, no-no, no! (What would my sisters say?)

  Na, na, no-no, no! (I didn’t say I hated it, but…)

  Na-na, na, na-na, na-a-a-aah!

  (spoken)

  Look, we both know it would never work, okay?

  We’re just too different, you and me.

  It’s a nice idea, but… oh, hell…

  You took me out slow dancing.

  Brought me a long white rose.

  I never thought I would see

  you gettin’ down on one knee.

  I never thought you'd propose!

  Don't think my job will like it.

  I can't afford a nice dress.

  My head was screaming out wait

  but I could not hesitate

  when I answered you yes!

  It was just this once! (Just this once!)

  But baby, gods, it's been nice!

  Could you imagine the scandal?

  I don't think I could handle

  going through it all twice!

  I mean, if I'm being on the level,

  that's the thing about forever:

  you don't get another one when it ends!

  So, baby, it was just this once,

  and we’re not doing this again!

  Na, na, no-no, no! (Once wasn't enough for you?)

  Na, na, no-no, no! (Gods, all the hair, and the makeup, and…)

  Na, na, no-no, no! (Thank you cards. So many thank you cards!)

  Na, na, no-no, no! (Another honeymoon wouldn't suck though…)

  Na-na, na, na-na, na-a-a-aah!