Heidi Klum admits it's hard co-parenting with ex-husband Seal, as she reveals things 'aren't rosy' between them

German-American model Heidi Klum has revealed that co-parenting with ex-husband Seal is 'hard' as it's not all 'rosy-rosy' between them.

The 46-year-old shares three children with the 57-year-old musician and the pair were married from 2005-2014, announcing their separation in 2012.

They both share four children — 15-year-old Helene (whom Seal adopted after Klum's previous marriage to businessman Flavio Briatore), 14-year-old Henry, 13-year-old Johan, and 10-year-old Lou.

In an interview with Red magazine, Klum admitted that raising her children with her ex-husband can sometimes be difficult.

She explained, "There's always a reason why you're not with someone any more, you know?" 

She continued, "It's not all rosy-rosy. It just isn't. So sometimes it's hard, but then you have to all come together as a family and sometimes everything is just like hopping on clouds. It's just the way it is."