Being that I have experimented with bloodplay in my much younger years, I could tell you how to do what you're intent on doing. I won't though. What I will tell you is that if you two are indeed different blood types, within about 15-30 seconds of your blood mingling it will do some major clotting. (Same reason you can't give people just any old type of blood when doing surgery.) Therefore all you will end up licking off eachother is a lumpy, ugly mess. Not as pretty as the vision you had for the night, is it? Other than that icky mess is the fact that blood was not intended to sit in some fancy little gobblet (or whatever vessel you had imagined drinking it out of) out in the air while you two get it on. It is incredibly rich with the sort of little nutrients that bacteria and molds (and everything else you'd never want to ingest) just love. Give them an hour to set up their homes in there and it's not going to be a tasty drink. If you're still intent on doing it, no one can stop you of course. But please give it a second thought. Or third. Or fourth. Listen because I speak from experience, whatever fantasy you have built around this idea has such a low chance of ending up the way you'd imagined it that it might just be better to keep this one a fantasy. Good luck whatever you decide.
Posted: 30 Sep 20:56