What's your take on sleeping with someone when you know you have an STD?

🙈🙉🙊 • Mom to 2 amazing little boys.
Regardless of what you have, would you tell the person? I was diagnosed with hpv 8 years ago. The only person I had planned on sleeping with after that, I told about it. We never wound up having sex because I got back together with my ex and we got married. My best friend has 2 forms of hpv, something called pox, and was diagnosed with HSV 1, but vaginal. (oral herpes on her vagina) the herpes diagnosis happened in January and I'm fairly certain her husband cheated and that's how she got it. They are divorced now, just within the last month, and she's already slept with at least one guy, probably more. I personally feel that it's a major issue that she's not informing these men that she's got stds. It really bugs the shit out of me. I know it's hard telling someone but I still feel it's unfair and selfish. Thoughts?