I know no one will take it seriously but I could even believe that MP is David’s lost daughter because their relationship looks more like father-daughter than partners.

I think if it was the case, we would know it by now. I don’t believe he would have let those pictures and this rumor come out if she was his daughter. Don’t forget MP’s uncle who said they’re just friends too. But I get what you mean, they don’t look like a couple at all.