Every couple has different rules. Most heterosexual couples today, and many gay and lesbian ones as well, consider themselves monogamous , meaning that they have sex only with each other. It's important for couples to agree on what the rules are instead of trying to read each other's minds, then getting hurt and angry when you find out that you had different assumptions to start with. Well personally, I don't recommend using fear to teach about anything at all, except maybe hot stoves and drunk driving. People make bad decisions when they're scared, especially when they don't have all the facts.
Information usually seems to be a better tactic.
Knowing the facts about HIV and AIDS is much more helpful, in the long run, than trying to scare people into abstinance. For example, many people don't realize that even though there are many new ways of treating AIDS, we still cannot eliminate the HIV virus once someone has it. Facts like these may be somewhat scary, but hopefully they will make you think about your sexual decisions as well. Obviously, this is a popular question. It's true that many women have a hard time orgasming , especially during intercourse.