You're not alone in being frustrated about this diagnosis so soon after becoming sexually active. I have been in denial for many years about my diagnosis. I found out I had HSV (I don't even know if it's type 1 or type 2) when I was 20. At that point I had only had sex with one person. It was so frustrating to hear girl friends talk about their "sex-capades", knowing that I had trusted the man I was in a monogamous relationship with and had gotten literally and figuratively screwed. I still get very frustrated when friends don't protect themselves because I know how letting my guard down once caused something bad to happen to me.
I did tell my second boyfriend, who I started dating within a few months of being diagnosed, but after we had been involved for a few months and had already become sexually active. We used a condom every time we had sex because I didn't feel I could live with giving HSV to someone else even though he wasn't concerned. I felt like I had duped him by waiting so long to tell him. He had questions that I didn't get answers to because I wasn't ready to handle the situation when he and I got involved.
I'm now 28 and single again. I'm dealing with how to move forward with this diagnosis and how to not let it define my perception of myself or how I feel others perceive me. I am not dirty. I just had bad luck. Many of the negative stereotypes I believe society to have about herpes are likely only in my head. Rather than wallowing in my misfortune I can move forward with my life and be informed so I know how to "deal" with it. I think most relationships become sexual too fast regardless of their being a "bomb" like this to drop.
I was really surprised when reading the statistics that 1 in 5 men and 1 in 4 women have HSV. I had no idea it was so common. You'll know the right time to broach this conversation. It's more important to get to know someone before bringing it up because if they don't like you over some silly aspect of you, then they're not worth knowing all there is to know about you.
Part of what helped me was recently explaining to my two closest girl friends that part of the reason I stayed in a bad relationship with my second boyfriend was that I so desperately wanted to avoid the HSV talk in the future. The first friend I told, I couldn't look in the eye when I told her, but after she reacted by telling me that she still loved me and that I'd be surprised to know that another good friend of hers had made the same admission to her, it was much easier to tell my second friend. It helped them to understand me a bit better.
Not very concisely, what I'm trying to convey to you is that it will be ok. My outbreaks have gotten fewer and less severe over the years. When you are in a relationship with someone who truly cares about you then this won't be a big deal. Everyone has baggage going into relationships.