You were probably diagnosed because you experienced an outbreak.
Telling your partner you have genital herpes may be one of the hardest things about living with herpes.
Since you have had one outbreak, you will probably have several more over the next year. The vast majority of people with genital herpes have asymptomatic infections.
If you didn't have a symptomatic outbreak within a month after you were initially infected, you may never experience genital symptoms.
Although safe sex techniques are not 100% effective, consistently using condoms and other barriers, and avoiding sex during outbreaks, will greatly reduce the likelihood that you will infect your partner.
You should also avoid sex when you feel itching or tingling under your skin or other symptoms that suggest the herpes sores are soon going to appear. But when you are open and honest about your infection status, there will continue to be people who want you enough to take the risk.