Paris Hilton is reportedly desperate to win back ex-lover Benji Madden.
The hotel heiress - who split from the Good Charlotte rocker last November - has been consumed by jealously after seeing pictures of Benji spending Valentine's Day (14.02.09) with US singer Katy Perry.
A source said "Paris still has very strong feelings for Benji and seeing those pictures has really hurt her - especially as they were taken so close to her birthday. She is determined to get Benji back and she is not going to let anyone or anything stand in her way."
Benji and Katy spent the romantic day together in Las Vegas, although the 'Hot n Cold' singer has since claimed they are just good friends.
She said "It's two pseudo famous people sitting next to each other... doesn't mean we were bumping uglies! You know I don't just do that with anyone!
"I was there celebrating a really fun show and a boozy Valentine's Day with all my good friends. We were like a group of 25! Benji is a nice young fellow, but my heart really belongs to my cat."
Shortly after Paris separated from Benji, the blonde socialite admitted she still had strong feelings for the musician.
Paris, 28, said He's my best friend. He's been so great to me, so loyal. He is an incredible person, and we will always be really close. I'm still in love with him. He's a very special person - there's no one like him. I still have feelings for Benji.