Nicole Scherzinger says being famous is hard work.

The Pussycat Dolls singer - who is currently dating British Formula 1 racing
driver Lewis Hamilton - insists fans don't realize just how much effort goes
into being a pop star.

She said: "It's not as glamorous as people think. It has its ups and downs.
There can be a lot of intrusion into your private life, but I want to be
known for my music.

"It's not partying all the time - sometimes when I get the chance I am too
tired to party! People don't see the work that goes in to touring but it's
definitely worth it."

Despite being in a relationship with Lewis, Nicole thinks one of the
strangest things about fame is the number of different men she is
romantically linked with.

The 30-year-old star - who was recently reported to be dating Black Eyed
Peas star will.i.am after allegedly being spotted smooching with him at Los
Angeles' Opera nightclub - added to MTV: "I find that sort of thing funny.

That was the funniest thing when someone told me I was supposed to be dating
Will. He is like my brother, I don't know when the last time I saw him was.
He has been on tour."

Although Nicole is remaining coy about her relationship with 22-year-old
Lewis, she knows what qualities her perfect man should have.

The 'Don't Cha' singer - who first met Lewis at the MTV Europe Music Awards
in Munich, Germany, last November - said: "I look for someone with a good
heart. Someone who is confident and successful and goes after what he wants.
I love a guy with a great sense of humor."