It will be odd: Dominic Cooper on working with Amanda Seyfried

Actor Dominic Cooper said it would be odd to work with ex-girlfriend Amanda Seyfried on the "Mamma Mia" sequel, even though the pair have remained friendly since their split.
The pair started dating after meeting on the set of the 2008 movie, in which their characters were engaged.
In an interview to The Times' Weekend magazine, Dominic said, "I think it will be fine working with Amanda again. I haven't spoken to her for a while, but we always remained friends. Though it'll be odd, gazing into each other's eyes and singing an Abba song."
Amanda, 31, recently welcomed her first child with husband Thomas Sadoski, while Dominic, 39, has been dating actor Ruth Negga for seven years.