A couple cant create an STD from nothing — they have to get spread from one person to another.

What are the chances of getting an STD with only one partner?

After just one episode of sex with an infected partner, a female has a 60% to 90% chance of being infected by a male, while a males risk of being infected by a female is only 20%.

Can you get an STI or STDs even if youre with one partner only?

Even if someone has only had one sexual partner, that partner could have a disease. Of course, the chances of getting STDs (also called sexually transmitted infections, or STIs) are even higher if a person has unprotected sex with lots of different partners.

Is it possible to have an STD and not pass it to your partner?

No, some sexually transmitted diseases (STDs), also commonly referred to as sexually transmitted infections (STIs), are not transmitted consistently every time an infected person has sex with someone who is not infected.

Can a couple get chlamydia?

If I have chlamydia, what does that mean for my partner? Your partner may have chlamydia, too. Tell your recent sex partners, so they can get tested and treated. Avoid having sex until seven days after youve both started your treatment, so you dont re-infect each other.