I've just noticed that you answered to my qustion about casual contact. Thank you so much for your answer. I was hoping you could give me some more specific answers on these 6 question at the end of my post. Could you answer them? (each of these 6 Q) .The most important one for me is this one about visible/invisible amount of blood/semen. If you would answer me on that it would mean a lot to me. As you can see I was really waiting for news from you - sitting and pressing refresh button :)You're the only expert i can really trust. Thx a lot and have a nice day (or night or both)

Your sixth question was: Why when you masturbate someone and then, after a while with the same hand (with some fluids/fluids residue on it) mastrubate yourself, or cut yourself on this hand - you can't get infected? (You are saying that it is indirect contact - but that'd definitely contact with infected fluid - i don't unterstand that).

My answer: There are all sorts of scenarios you can come up with regarding potential exposure. Jerking off with another man's semen as a lube is not exactly casual contact, however. I agree this seems like not something high on the list of good ideas and should be discouraged. Will it lead to HIV infection? Rarely but still.

DW