Do I have to swallow sperm?

No! You must and should never do something you don't really want to do. In every form of sex, all partners should feel like doing what they are doing. You should also be allowed to stop at any time. Only do what you really want to do. If you are curious, you can also approach the topic slowly and talk about it with your partner.

Do men want their sperm to be swallowed?

Talk to your partner about their needs and perspectives and be sure to share your opinion. It is important to talk about expectations. In the end, however, you or he should never do something just because it is expected or out of fear of hurting the other person. Do what is right for you.

Can I become infected with HIV this way?

If semen enters the mouth or throat, there is a very low risk of HIV transmission (there have only been a few cases worldwide). You can reduce this very low risk even further by spitting out the semen and rinsing your mouth with some liquid – so that the semen only stays in the mouth for a short time. Even if sperm is swallowed, the risk of infection is very low. Drinking some liquid then helps to rinse the sperm into the stomach. Here, the robust oesophagus and the stomach acid protect against infection.

Can I force my girlfriend to swallow my sperm?

No. You shouldn't. This can be prosecuted as sexual assault.