If you are going to disclose your HIV infection to your sex partner, here are two things you can do to make it count:
Avoid code words or hints. Do not assume he knows what words like "poz" and "positive" mean. It is best to tell him 'I am HIV positive" or "I am infected with HIV."
Make sure that he understands what "HIV infection" or "HIV positive" means. Some guys still don't know that: (1) HIV is the virus that causes AIDS. (2) HIV infection is a serious health condition and there is no cure. (3) HIV can be transmitted during some sexual activities.
Under the criminal law, you also have to have an honest and reasonable belief that the guy agreed to have sex with you. So you must take reasonable steps to find out if he is too drunk or too high on drugs to agree to sex. If he is too drunk or high to agree to sex, then you could be charged with sexual assault. That is the law for everyone, not just for people living with HIV.
HIV disclosure: a legal guide for gay men in Ontario