Doctors say that no one has gotten HIV through kissing. Doctors advise that both partners avoid brushing or flossing their teeth before kissing so no blood is present. Also don't have oral sex unless you use a condom or other form of protection. Although some people believe this, it is not usually so. For example, a woman can insert a diaphragm several hours before and the sponge up to 24 hours before she has sexual intercourse.
Some people also like to incorporate birth control into their lovemaking.
For example, a man can help a woman insert her diaphragm or a woman can put the condom on her partner. HIV, the virus that causes AIDS, can be transmitted only through contact with body fluids, such as blood, semen or vaginal fluids of someone who has the virus. You cannot get HIV or other STDs from a toilet seat or from other forms of casual contact, such as holding hands with someone who has the virus.