What happened to Mila Munch's children's father?

I think Mila is also the mother to Jacques kids. Hugo has an especially strong resemblence to her. Maybe she had an affair with Bjorn that resulted in Lucas. Jacques got angry and they divorced. He got custody of 3 kids and she has the other 3? Maybe thats why Wolfgang is so rebellious. He misses his dad or sees his rebelliousness as way attract his father's attention.