BCG SA fail ---> Ft

Hi all,

During my BCG first round interview, I really feel like I hit it off with one of my interviewers in particular (I must bombed with the other guy, because I didn't get a final round offer). But, the Consultant I was good with said I nailed his case question and offered to help with stuff down the line.

What's the best way of maintaining contact with him and hopefully get a FT interview offer? I obviously don't want to inundate him with emails.... but it's worth it to keep in contact right? Maybe update him on my current internship status?

Thanks