Sienna Miller, Tom Sturridge are best friends

Sienna Miller and Tom Sturridge may not be together any more but they unite every night to put their daughter Marlowe to bed.

The former couple - who split almost two years ago - are on extremely amicable terms for the sake of their four-year- old daughter, and living a few streets away from one another in New York City means they can get together every night to put the youngster to bed.

However, despite their closeness, the 35-year-old actress says things are "complicated" between herself and her ex- partner, reported Contactmusic.

"We do bedtime every day. We felt like as much togetherness as possible would be ideal, and fortunately we really love each other and are best friends, and so that works. It's not that it's not complicated, because it is," Miller told Allure magazine.