having bareback sex is obviously high risk, frankly i don't think disclosing should even really be necessarily, because it's a 2-way street, the neg guy should be asking the questions if he really wants to stay neg, same time, lying about it is proper dodgy as well. Best bet for a poz guy if asked is to make sure that he confirms his status via an electronic method, be it a text, e-mail, IM, whatever, but if it's electronic, then there will be evidence for defence if some fuck-wit decides to try to act the innocent victim, if it's just verbal, then there's no evidence you actually confirmed your status before having sex