Well everyone's going to judge you about your life anyway so don't concern yourself with their opinions.
If you're going to have sex with guys see your GP and get on PrEP. If you haven't already get the HPV & hepatitis A & B vaccines.
Avoid fluid transmission as much as possible. Wear a condom when fucking someone. Getting fucked? Make sure the guy topping you wears a condom. Stock up on them. Lots of them. Order in bulk. Never let yourself run out.
Always know your STI status: get tested regularly once you become sexually active.
Porn isn't sex. Know something real about sex before you start. Read
The Joy of Sex and
The Joy of Gay Sex or similar sex manuals. Know and understand the difference between the male and female sexual response.
The only way to avoid all risk is to never have sex. That's an option but I don't recommend it. A better choice is to minimize risk so you're ready when it happens. Even if you're not actively looking for it you might discover it's looking for you. Happened to me first time out of the blue. Surprise, surprise.
Consent. Always ask. Never presume/assume.
Don't stress over it. You're dating a real live person just like you. Even if you don't have sex relax, enjoy their company and let them enjoy yours.
