Rhys Ifans ruined his new girlfriend's birthday party on Wednesday night.

The hellraising actor was celebrating Kimberly Stewart turning 29 at London's Bungalow 8 club when he spotted a fellow reveler getting close to his lover.

Rhys Ifans and Kimberly Stewart have reportedly rekindled their romance.

The couple were first linked last month - weeks after the "Notting Hill" actor split from Sienna Miller - but Rhys was then seen in Ibiza with another girl, prompting rumors they had ended their brief relationship.

Rhys Ifans was spotted partying with Kimberly Stewart at London's exclusive Bungalow 8 nightclub on Monday night.

The "Notting Hill" actor - who is said to be "devastated" following his recent split from actress Sienna Miller - sought comfort in the arms of rocker Rod Stewart's daughter on a raucous night out.

Jude Law was seen passionately kissing Kimberly Stewart in a stranger's garden.

The pair were said to be rolling around on the lawn like a pair of "loved-up teenagers" just hours after they were seen canoodling in a nightclub in Essex, South East England on Saturday.

Jude Law has been spotted passionately kissing Kimberly Stewart.

The 'Alfie' actor spent Saturday night with Rod Stewart's daughter at the One9Five Bar and Nightclub in Essex, South-east England.