it does have to do with Roger having HIV. Roger is thinking ahead of what will happen and is saying that "Our temperature would climb". he means that they would both be attracted to each other and then they would do something that they would both regret. When he is saying "i should tell you" he wants to tell her but doesnt seem to have the guts to. he wants to love but cant because he knows what happened to his last girlfriend and he does not want to date another junkie because of what happened.
it does have to do with Roger having HIV. Roger is thinking ahead of what will happen and is saying that "Our temperature would climb". he means that they would both be attracted to each other and then they would do something that they would both regret. When he is saying "i should tell you" he wants to tell her but doesnt seem to have the guts to. he wants to love but cant because he knows what happened to his last girlfriend and he does not want to date another junkie because of what happened.