I hate to bring up this not-so-fun topic, but I'm concerned. Many of my friends have dated guys that they wouldn't have sex because they were worried about STIs, but they didn't seem the least bit worried about having oral sex.
When your mouth has contact with someone else's business, you can very well get a whole plethora of STIs — the problem is that many of these sexually transmitted infections are asymptomatic, which means you can't tell if someone is infected just by looking at them. That also means an infected person may not realize they even have an STI so they let their partner perform oral sex on them while unknowingly and accidentally passing the infection on to them.
Which STIs can be passed on through oral sex? To find out
Gonorrhea: I know this is gross, but if you perform oral sex on an infected person, you can get gonorrhea of the throat.
Chlamydia: This can also infect the throat in the same way.
Genital Herpes: This STI is passed by skin-to-skin contact with a developing or existing sore. Unfortunately, even when there are no sores present, an infected person can still pass it on to their partner.
Genital Warts (HPV): This can be passed on when an uninfected person touches infected skin on their partner's genitals. So you don't even have to be having vaginal or oral sex in order to get HPV from someone else.
Syphilis: If a person performs oral sex on someone who's infected, and they come in contact with an open sore or a skin rash, they can get syphilis, too. Since lesions can appear on the genitals and on the lips and mouth, that means you can even get it from kissing an infected person.
HIV: This potentially deadly STI can be passed on through blood (including menstrual fluid), semen, vaginal fluid, or breast milk. So if a person performs oral pleasure on an infected person, and if they have a cut or sore in their mouth or on their gums, then they can contract HIV, too.
I know this is all very scary information, but knowing the facts will help keep you safe. Before becoming sexually active, you and your partner should get tested. It'll show that you respect one another, that you're responsible, and your sense of relief will make it all worth while when you do share that kind of intimacy.