Jasmine,
Also try and find out from your doctor/dermatologist if you can use something like Zovirax cream on your...ummm...."nether regions". Zovirax is an antiviral cream (also Denavir is another brand), available only by prescription in the US I believe. It's used for cold sores, and also the sores you get from any herpes-related visrus, such as the chicken pox virus (it's latent and shows up years later in areas where you have nerve bundles, like lower back area) and manifests in similar sores.

It's an alternative to Valtrex, and although you need to put it on about 2x a day, it may be a good option over taking drugs. I just don't know if it can be used everywhere.

Your breakouts, even if they occur after friction of some sort, are still body stress related. Anytime you irritate skin, it stresses your body and you are likely to get a breakout. A virus does not flare from friction only, but it's just your body's reaction to the skin irritation, ie at a reduced immunity point. For ex, your period will often cause breakouts -- it's still your body under stress of some sort. So a bad workweek, hard training, poor sleep, periods....all of it can cause it.