If I put my arm around someone or lean in for a kiss that could be unsolicited but shouldn't be illegal in the context of a date. Similarly dirty talking in a date is different to doing it in the office.
I suppose this could be dealt with through user preferences (don't show nudes/ doesn't appreciate nudes) but the line seems blurred in this situation. It isn't as if you're walking around town in a Mac.
I'm not saying it's ok, but it's not definitely, not ok. People are different, dating is already hard enough without worrying about if you're going to be arrested for trying to get to second base.