>>109011586That's pretty pessimistic imo. I think that they both have the intelligence to be able to work it out. Not only is Adrien both personalities of himself and Cat Noir, he's also much better at communicating his feelings than Marinette.
Marinette is very understanding, and wants the best. So I think that as long as he can speak his mind to his closest friend and partner, they would be a perfectly functional family.