[Kageboushi]

OP should try picking up girls IRL instead. If dealing with shady people on the internets, use the slogan "hope for the best, prepare for the worst," but I suppose he's learned that by now.

My attempt at constructive advice is that involving the police will mean a lot of hassle, as someone mentioned before. And who knows? It might end up costing ya more.

Try to strike a deal with the restaurant, or run, but I don't know how wise that is. You're probably going to have to deal with the police in that case, and if you suspect you will, you definitely wanna be the first to call in and give them the story. I know a European guy who got into trouble with police in Japan because of a minor argument with someone (according to him), and his lawyer told him if he would have called up first to explain he would have avoided a world of hassle.