Mysterious Music

On my iPod today, I heard two songs that I don't understand. They're old favorites of mine and I know the words by heart, but if anyone asked me what the song meant, I'd have no clue. Here are the lyrics; any guesses what they're intended to mean? Both songs have ambiguous "she", "you", "I" references, so who are they talking about??

"Northern Star"
Mel C (1999)

They tried to catch a falling star
Thinking that she had gone too far
She did, but kept it hidden well
Until she cracked and then she fell

If all the history is true
She's gonna end up just like you
You made it to the other side
But tell me who will be my guide?

They build you up so they can tear you down
Trust the ocean, you'll never drown
Who is next? Who's gonna steal your crown?
You'll see..

I have learnt my lesson well
The truth is out there, I can tell
Don't look back, and don't give in to their lies
And goodbyes
Northern Star

Fulfil the longing in your heart
Then we will never be apart
And if they dare to question you
Just tell them that our love is true

They buy your dreams so they can sell your soul
Is it any wonder we've lost control?
Feelings come, feelings go

I have learnt my lesson well
The truth is out there, I can tell
Don't look back, and don't succumb to their lies
And goodbyes

Live your life without regret
Don't be someone who they forget
When you're lost reach out for me
And you'll see, she's not far
Northern Star


"Brother Louie"
Modern Talking (1986)

Dear, love is a burning fire stay
Cause then the flames grow higher, babe
Don't let him steal your heart
It's easy, easy, girl
This game can't last forever, why?
We cannot live together, try
Don't let him take your love from me

You're no good, can't you see brother Louie, Louie, Louie
I'm in love set you free
Oh, she's only looking to me
Only love breaks her heart brother Louie, Louie, Louie
Only love's paradise
Oh, she's only looking to me

Brother Louie, Louie, Louie
Oh, she's only looking to me
Oh, let it Louie
She's undercover

Brother Louie, Louie, Louie
Oh, doing what he's doing
So, leave it Louie
'Cause I'm her lover

Stay, cause this boy wants to gamble, Stay
Love's more than he can handle, girl
Oh, come on stay by me forever, ever, why?
Does he go on pretending that
His love is never ending babe
Don't let him steal your love from me

You're no good, can't you see brother Louie, Louie, Louie
I'm in love set you free
Oh, she's only looking to me
Only love breaks her heart brother Louie, Louie, Louie
Only love's paradise
Oh, she's only looking to me

Brother Louie, Louie, Louie
Oh, she's only looking to me
Oh, let it Louie
She's undercover

Brother Louie, Louie, Louie
Oh, doing what he's doing
So, leave it Louie
'Cause I'm her lover