Should I expect an offer?

So yesterday I did a final round interview with a large firm for an internship position this summer, and I can't seem to tell how it went. Immediately afterwards I felt good about it, but I'm not sure since it's so different than interviews I've done in the past. It was supposed to be a behavioral interview and the only real behavioral question I got was, "Why Company X?" The rest of it was just casual conversation with a partner at the firm. The partner wasn't very expressive, so it was hard for me gauge his thoughts. At the end of the interview he asked me if I had any questions regarding the internship and if I had his contact info. When I said I only had his name, he told me he would send me an email so that I would have it (he did afterwards). In the email it said that he enjoyed speaking to me. Is it possible that I got the job?