I am coming from a second round interviews with a strategy house where I met my future boss. The guy is American, I really liked him and I have a positive feeling about the company. When I left he gave me his business card "in case you have any more questions", he said. Does this mean he expects me to send him an email? What do you think I should do with that, just leave it or get back to him on Monday? I asked him about the next step and he said HR will get back to me soon. Please help!