Never had one (lover/girlfriend). So i wondered. What stop the girlfriend from cheating with someone ? And even worse. What if she slept without protection with someone that have STD ? You can check for STD but don't they have some kind of incubation period ? (not sure if they can be detected then) and also she can cheat after the check. In short i shudder when i imagine getting a girlfriend. Because i don't trust people beside my close family. Also for ex, dark poring nuffer said he cheated his girlfriend (revealed in NUF). Surely he used protection. The point is he cheated and his girlfriend doesn't know shit.