Yes. You can get herpes just from coming in contact with someone with a fever blister...so if you or your partner have ever had a fever blister, that means you have some form of the herpes virus. If your partner has a fever blister and gives you oral sex you can contract the disease this way. Also, there is a period of time where a person with herpes sheds the virus- it is also contagious during this time when there are no symptoms. My doctor just informed me that herpes type I used to be just from cold sores, and type II was from sex, but he said now the virus is so widespread it is mutating, and so now you can get either type of herpes in either way, cold sore or genital sore.