Hey,
Is it possible to transmit hsv-1 to someone's genitals through oral sex, if the person receiving the oral sex already has hsv-1 and has gotten cold sores on their lips in the past??
Yes this can happen it is possible to have HSV1 both Orally and Genitally although already having it Orally gives a degree of protection against contracting it Genitally, it's not very likely that it would change site from Oral to Genital ......