Let's face it, the song is perfect for them! Song from Phineas and Ferb: Act Your Age.
Laney: I wanted you to see me
But for so long, you were blind
I guess it's time to face the future
And leave everything behind
But what would our lives had been like
If you'd just given me a sign
'Cause I like you more than every other
Thing I like combined
I spent so many years
Hoping something would begin
I thought that I was over you
But here I am again
What might have been
Corey: I can't believe that all this time you
Never said a word
Although it's possible you did
But I just never heard
I never even noticed
I guess I wasn't that alert
But I should say that in my defense
You were being quite overt
And now our endless years
Are finally coming to an end
I tried to make the most of everyday
But now the years just seem misspent
What might have been
Laney: I could've been your girlfriend
Corey: I could've been your boyfriend
We might've been a couple
Laney: They would've called us, "Corney"
Corey: I would've held the door for you
I would've shared my umbrella
Laney: You could've held my hair back
When I got sick with salmonella
Kin and Kon: (Sick with salmonella)
Corey and Laney: We could've been together
All you had to say was when
But even though I wanted so much more
I guess you'll always be my friend
What might have been
What might have been
Laney: (Sighs) What might have been
I actually started crying a bit while writing this, so sweet! Read you later!
~StarHeart~