Tilda Swinton's Partner Admits to Having Another Lover

Tilda Swinton's partner has admitted to having another lover.

John Byrne, a director, artist and playwright, has been romantically involved with 42-year-old theater lighting director Jeanine Davis for two years.

Tilda, 47, and John, 65, have an open relationship; and the 'Michael Clayton' actress has been seeing 29-year-old German painter Sandro Kopp.

Byrne revealed, "It's all very relaxed and amicable. We have not hidden away and Jeanine is very much part of my life.

"Tilda knows all about it and is more than happy with the situation. It's all very relaxed and amicable.

"Tilda has Sandro and the arrangement works very well."

The couple, who aren't married, have twin children -- 10-year-old Xavier and Honor -- and live together in Scotland.

John also revealed that Jeanine has met his family and Tilda's lover.

He adds, "Jeanine has met my children as well as Tilda. I wouldn't say we all socialized together but she has met Sandro and we have all been under one roof together... I know some people will struggle to understand it, but it works for us."