It's called "You're All I Need", it came out in 1987 on the Girls Girls Girls album. In the DVD of the best Motley's videos he and Tommy Lee are talking about the videos and he said "You're All I Need" was written for an ex-girlfriend of his (didn't mention any names) and that she had cheated on him with a guy from General Hospital and he had a song out too by that name. So Nikki, deciding to get revenge, wrote this song (see lyrics below), and gave it to her.

You're All I Need

The blade of my knife
Faced away from your heart
Those last few nights
It turned and sliced you apart
This love that I tell
Now feels lonely as hell
From this padded prison cell

So many times I said
You'd only be mine
I gave my blood and my tears
And loved you cyanide
When you took my lips
I took your breath
Sometimes love's better off dead

You're all I need, make you only mine
I loved you so I set you free
I had to take your life
You're all I need, you're all I need
And I loved you but you didn't love me

Laid out cold
Now we're both alone
But killing you helped me keep you home
I guess it was bad
Cause love can be sad
But we finally made the news

Tied up smiling
I thought you were happy
Never opened your eyes
I thought you were napping
I got so much to learn
About love in this world
But we finally made the news

You're all I need, make you only mine
I loved you so I set you free
I had to take your life
You're all I need, you're all I need
And I loved you so, so I put you to sleep

It's a slow depressing song about killing your girlfriend he said. I just wondered if it was directed at Vanity and who was the guy on General Hospital that had a song out back in the 80's under that same title? He's got a sick sense of humour!

jack wagner has the song Your all that i need.

John Stamos and Vanity were in a film together... John was also on General Hospital

HMMMMM OK, so did he or didn't he write it for/about Vanity? As far as I know John Stamos never had a singing career, did Vanity ever date Jack Wagner? I was thinking Nikki meant that guy Michael Damian? He had a few songs out in the 80's and he was a soap opera heart-throb (WOW was he ever! and still is !!!!!) but I don't think Vanity would be his type LOL!