In my opinion the girls most likely just cover any herpes with red lipstick or they mistake it for something else and keep it pushing, most herpes infections happen when the girls arent showing signs anyway, up to 70% of infections happen that way in the U.S, also i would never trust a chick who doesn't rinse with listerine either. Its important to look because scope, act, and the other generic mouth washes don't guard against the major STDs like herpes, gonorrhea and etc which are in the throat and lips but listerine does with a 30 sec swirl helps alot. Stick to R&T's its alot safer and you wont have to think about stds. It’s pretty scary how easily you can catch one from basic contact.