You know they sell fake genetalia, both male and female parts, buy them and become as active sexually as a bunny, or! U simply test each person for std's wait a day or two and get your freak on, now monogamists could do that, no sweet, but poly-dudes are in a tough spot!
Now condoms have certain rule to function as well as we hope for, i'll talk about that later, in the mean while my advice is to stop sexual activities, or at least commit in a monogamis relationship 4 reasons we all know and comprehend!