The "not horned up nonsense" answer is STAY NEG. You have your whole life ahead of you. 25 is too young to already have The Gift.
I say just chill and take things as they come. Don't worry so much about what COULD happen. As a human, you have free will, meaning no one's going to put a gun to your head and say, "Be a fucking whore!" if you choose to play with guys.
I understand your reservations, but sex, in general, doesn't ruin your life and consume you completely once you give in to your curiosity. (I can't say the same for heroin or chem sessions, though.) However, if you intentionally seek out HIV and let your viral load get out of control, your life WILL revolve around your lovely case of full-blown AIDS.