The pair are reported to be together after being seen kissing in a Los Angeles nightclub last week, said media reports on Wednesday.

According to a number of celebrity websites Hilton and Ronaldo have promised to remain faithful to each other while Paris is in Dubai filming a new TV show and he is in America.

"He is really taken by Paris. It could be something big," a source told Britain's Daily Star.

"They've pledged to keep in touch and have been texting each other all the time." -- REUTERS