Entourage star Jeremy Piven is dating Jason Wahler’s former fiancée Katja Decker Sadowski, RadarOnline.com can exclusively reveal.

Ladies-man Piven, 45, who has been linked to model Ashley Chontos, January Jones and Dita Von Teese in the past, was spotted walking hand in hand with the 22-year-old blonde beauty Katja at the Arc Light Cinema in Los Angeles on Sunday.

Law student Sadowski and Wahler called off their engagement in February, 2009, triggering a series of legal troubles for the reality television star, culminating with his decision to enter rehab.

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One source told RadarOnline.com: “Jeremy and Katja looked really happy at the cinema – they were holding hands as they waited in line to see the movie King’s Speech on Sunday night and they were kissing and cuddling one another throughout the film too.