treason

According to this website
This Day in Music
The song that was #1 on the pop charts on your 18th birthday is your life's theme song.
If this website is legitimate and is not one of those fake internet things where weirdos pretend to be other people, sex chat you up, and then tell you they are "real" vampires, then mine would be "Here I Go Again..." by Whitesnake.

Just another heart in need of rescue
waiting on love's sweet charity
an' I'm gonna hold on for the rest of my days
'cos I know what it means to walk along the lonely street of dreams.

Here I go again on my own
goin' down the only road I've ever known.
Like a drifter I was born to walk alone.
An' I've made up my mind, I ain't wasting no more time
but here I go again, here I go again,
here I go again, here I go,
here I go again

Jordan's is "I Saw the Sign" by Ace of Base.

Life is demanding without understanding
I saw the sign and it opened up my eyes
I saw the sign
No ones gonna drag you up
To get into the light where you belong
But where do you belong
Under the pale moon
For so many years Ive wondered
Who you are
How can a person like you bring me joy
Under the pale moon
Where I see a lot of stars

What's yours?