My friend thought she had herpes because her boyfriend had some sore on his penis they had unprotected sex its going for 2 months and she don't have no sign of it is this possible she don't have it?

Maybe: Keishy - when a person has herpes, it is not always active. So if she got herpes from her boyfriend (which sounds very possible from what you are describing) she can have herpes, but it is not actively causing symptoms. Herpes usually goes through cycles. The symptoms can come and go. If her boyfriend had only a single soar on his penis, he shoudl get it checked - it may be syphillis instead.

Use protection.: It usually takes 2 to 12 days (average = 4) after exposure for you to have signs and symptoms of primary genital herpes infection. Occasionally, you will have a primary infection that does not have signs/symptoms. If he did have a lesion, she should get tested for other sexually transmitted infections as well, e.g. Syphilis. Please have her make an appointment with her doctor. Please use condoms.