first make sure this is actually herpes. there are many viral infections that can occur in the mouth that can mimic herpetic lesions. have you had a culture? if it herpes you are capable of spreading the virus to others who may be susceptible. if someone has a history of oral herpes themselves you cannot spread to to them (they already have the virus). be extra careful with kissing when you have active lesions. not all people who are exposed when you do not have active lesions will get herpes simplex but it is possible.
i get cold sores in my mouth regularly when should i worry about kissing etc? . for the last 6 months a have been getting fairly regular outbreaks of herpes simplex 1 on the inside of my mouth. i know they can be spread even if they aren't present so when should i worry about spreading it?