Even if you are treated and your partners have no symptoms, there is still a chance they have the STI. If your partners are not treated for STIs, they may be able to infect you again. Even if you do not plan on having sex with that partner again, it is still important for them to be tested so they don’t infect someone else. Many STIs can be very serious if left untreated, and people deserve to know if they may have been infected. Then they can get treatment as soon as possible and avoid passing the infection on to others.