Sienna Miller's Rhys kiss

Oct 15, 2007, 12:30 GMT

10/03/2007 - Sienna Miller - \'Stardust\' London Movie Premiere - Arrivals - Odeon Leicester Square - London, England © Solarpix / PR Photos

Sienna Miller and Rhys Ifans have confirmed they are a couple after being seen kissing in a park.

The pair - who have constantly denied they are a couple, despite frequently being pictured together - were spotted walking Sienna's dogs Porgy and Bess in a West London park on Saturday (13.10.07) when they stopped for a lingering kiss on the lips.

An onlooker said: "They looked like they were very much in love as they strolled through the park. They were holding hands as they walked the dogs, and then suddenly stopped to share a romantic kiss. Sienna was beaming afterwards."

The stars - who sparked rumours of a relationship when 39-year-old Rhys had a swallow tattoo to match Sienna's inked on his wrist - have always insisted they are "just good friends", but Rhys couldn't hide his feelings for 25-year-old Sienna on their walk.

The onlooker added: "Rhys kept putting his hand on Sienna's bottom as they walked along, and she definitely didn't seem to mind his attention."

Sienna, who reportedly split from her 'The Edge of Love' co-star Matthew Rhys last month, has had a string of high-profile relationships.

She dumped former fiancé Jude Law after he admitted having an affair with his children's nanny, Daisy Wright. Despite attempting to reconcile they parted ways for good last year.

'Notting Hill' star Rhys hasn't had a serious relationship since he split from his PR executive girlfriend, Jess Morris, in November 2004. He was linked with Sienna's rival Kate Moss, following her split from Pete Doherty earlier this year.

(C) BANG Media International