To tell a new partner you have an STD, pick a calm, private moment before things get physical, lead with your own plan ('I get tested between partners and I use condoms'), and state your status simply and factually. Frame it as caring about both of you. Give them a second to react, and have the basics ready, most STIs are common and treatable.

Key figures

Prevalent STIs in the US
~68M
about 1 in 5 people on any given day
New STIs each year
~26M
nearly half in people aged 15–24
Most common ones
curable
chlamydia, gonorrhea, syphilis, trichomoniasis
HIV when treated
U=U
undetectable = untransmittable
STIs are common, what you are disclosing. Context that makes the conversation less daunting Source: CDC STI Prevalence & Incidence Estimates, 2018.
STIs are common, what you are disclosing
ItemValue
Prevalent STIs in the US~68M: about 1 in 5 people on any given day
New STIs each year~26M: nearly half in people aged 15–24
Most common onescurable: chlamydia, gonorrhea, syphilis, trichomoniasis
HIV when treatedU=U: undetectable = untransmittable

Telling a new partner before sex: why, and when

Disclosing before sex is the only way the two of you can make an informed decision together. Because most STIs can be completely silent, neither of you can guess a status from how someone looks or feels. Getting tested, ideally together, and sharing the results is the one reliable way to know where you both stand before you stop using condoms.

Timing matters as much as the words. The conversation lands best when it happens early, while you're both clothed, sober, and not in the heat of the moment. That gives your partner room to ask questions and decide what protection they want, and it keeps the choice mutual. Condoms reduce the risk of STIs and pregnancy when used every time CDC, and agreeing to use them consistently is a decision partners make together.

How to say it simply: scripts for a first disclosure

Lead with your own plan and frame the talk around caring for both of you, not accusing anyone. Keep it short and factual, then give the other person a beat to absorb it. You don't owe a medical lecture, just a clear statement and a calm answer to their questions.

  • "Before we go further, I want to be straight with you. I get tested between partners, and I have herpes. It's manageable, and I'm happy to talk about how we keep us both safe."
  • "I think we should both get tested first. I do that with every new partner. Want to go together?"
  • "I take a daily medicine that keeps my HIV undetectable, which means I can't pass it on. I wanted you to know that before anything happens."
  • "I always use condoms, and I'd want to with you too. Is that something you're on board with?"

If you're disclosing your own status, keep it simple, give them a second to react, and have the basics ready: most STIs are common and treatable, and for HIV, undetectable equals untransmittable. If you're not sure of your current status, get tested before the conversation so you're speaking from facts. And if you had a recent risk, check when to test after exposure, because a test taken too early can miss an infection.

Anonymous partner-notification services: how they work and when to use them

Telling a prospective partner is one situation; letting past partners know they may have been exposed is another, and you don't always have to do it face to face. Many U.S. health departments offer partner-notification (sometimes called partner services), where a public-health worker contacts your past partners to tell them they should get tested without revealing your name. There are also online tools that send an anonymous text or email alerting someone that a partner recommends they get checked.

These services exist because an untested partner who never finds out keeps an infection circulating. They're especially useful when you don't feel safe contacting someone directly, when you've lost touch, or when there are several people to reach. For HIV specifically, public-health partner services tie into both prevention and care; the CDC frames how and when to handle disclosing your HIV status so that partners get the testing and treatment they need.

Expedited partner therapy: getting a partner treated fast

If you've been diagnosed with chlamydia or gonorrhea, expedited partner therapy (EPT) lets your partner be treated without their own separate clinic visit, your clinician gives you the medication or a prescription to pass along CDC. Treating both people at once stops the infection bouncing back and forth between you, a cycle clinicians call reinfection.

EPT is legal in most states for these two bacterial infections, though rules and availability vary, so ask your provider what's allowed where you live. It's not a substitute for a partner getting their own full check, ideally they'd still get tested for other infections, but it closes the treatment gap fast when a clinic visit is a barrier.

If they react badly: what that tells you

Some people respond with questions, some need a day to think, and a few react with anger or rejection. None of those reactions are a verdict on your worth. A calm, respectful conversation that gives someone real information is what a good partner deserves, and how they handle it tells you a lot about whether they'd be a safe partner in other ways too.

Expect a range of reactions. Many people simply ask, "What does that mean for us?", which is your opening to explain that condoms reduce risk when used every time, that treatment makes most STIs manageable, and that an undetectable HIV partner doesn't transmit. If someone shames you or shares your status without permission, that's a boundary problem on their end.

How disclosure differs for herpes/HPV vs HIV

The conversation isn't identical for every infection, because the risks and the tools differ. With herpes and HPV, both extremely common and often symptomless, the realistic message is that you manage outbreaks, use protection, and reduce risk together; HPV in particular is one most sexually active people encounter at some point. The disclosure is mostly about transparency and shared precautions.

HIV carries more weight, and more powerful tools. If you take treatment that keeps the virus undetectable, you do not transmit HIV to sex partners: undetectable equals untransmittable (U=U), which changes the whole conversation for couples with different statuses CDC. For an ongoing partner at higher risk, PrEP is a daily or scheduled medicine that prevents HIV CDC, one more tool you can choose together alongside condoms and regular testing. Starting treatment early protects partners too, the principle behind earlier HIV treatment.

SituationWhat the disclosure centers onKey tools to mention
Herpes / HPVTransparency and shared precautions; both are commonCondoms used every time, managing outbreaks, regular testing
Chlamydia / gonorrheaGetting treated and avoiding reinfectionTreatment for both partners, expedited partner therapy
HIVStatus, viral suppression, and partner protectionU=U, PrEP for the partner, ongoing treatment and testing

When to see a clinician

See a clinician if you're not sure of your current status, if you've had a possible exposure, or if you want to discuss prevention tools before a new relationship. A provider can confirm what you have, explain your treatment, and walk through options like PrEP or expedited partner therapy. If you've been diagnosed and want past partners notified discreetly, your clinician or local health department can set up partner services for you.

Go in sooner rather than later if you have new symptoms, a partner has been diagnosed, or you're starting a relationship and want a clean baseline. The conversation with a new partner always goes better when it's built on a recent, confirmed result.

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