That's the problem with my game. I can't arrest Mario. I told Sofia that Emma will help me but nothing happend. Sofia has just two dialogue options. Only "Are you single" and "How is it going". Nothing more. Did i understand something wrong and is it supposed to be like this or is that a glitch?
The most probable thing that I'm expecting happened is you selected: "do you know your ___ fucks a lot of sluts" during the second sex scene with Emma at the sauna, which is the share choice. And since you had told Mario you wouldnt help him, and Sofia is expecting Emma to help then the quest is basically in Limbo.
The quest will have some changes later about this choices, to prevent this kinds of "limbo" situations from happening. Another example would be to not share Emma but tell Mario about Sofia (this is another limbo state)