Giovanni Mansion help needed *spoiler maybe*

[wijkmark]

I am having trouble with the sidequest-thing at the Giovanni Mansion.. The one where the three related (or maybe they aren't related?) persons want to find dirt on each other. I can't seem to find any dirt on anyone at all in any way.. Am I just lacking in persuasion or something or do I need to look elsewhere for info? The guy laying alseep in the room with the hooker, is he in any way a part of it? The two girls hiding in the bathroom of another room, are they in any way involved? Help please..

[OuterParadise]

All three of 'em have a dirty secret, and each of these wants to find out the secrets of the other.

Not sure if there's any other way but I persuaded/seduced them into telling their secrets to me.