Olivia Wilde and Jason Sudeikis have ended their 7-year relationship. It is not known what influenced the couple's decision, but the separation has been friendly and they have decided to share time together as parents of their two children.

"The split happened at the beginning of the year," a source close to the couple told PEOPLE. "It has been friendly and they have gone through an excellent co-parenting routine. Children are the priority and the heart of the family relationship."

Wilde and Sudeikis have son Otis Alexander, 6, and daughter Daisy Josephine, 4. The duo started dating in November 2011 and Sudeikis proposed to them right after the holidays in 2012.