herpes is transmitted skin to skin contact anywhere in the genital region. so a condom will most likely not protect you. you don't even need to have sex to get it, just rubbin up on each other it can be passed. not only that most people don't even know they have it unless they notice symptoms , which could possibly be never. tests are unreliable unless you show symptoms and a lot of doctors won't even bother. which is why its the most widepsread std. Typically it can not be passed unless there is an active outbreak but its not guarantee safe.
Best bet is to not be a hoe, messing around with multiple partners.