"return on investment". What ever happened to just taking a girl out for a nice dinner. Any girl that is "returning" after the first date isn't a girl that I foresee having a long term relationship with anyway. Plus what's your investment. Dollar menu at McDonald's or a $100 per person steak house. Sorry this is what you have to date single ladies.
Personally, I never understood paying for girls to eat or taking them out or whatever. Sure, I can afford to, but why should I pay for her when she hasn't done anything for me? That's the way I see it. Why pay for something if you don't benefit from it? It's sort of like a business transaction.