A member asked:

My boyfriend has a unbroken cold sore on his upper lip he performed oral sex on me am i in line of catching it or is that only when it's broken open?

A doctor has provided 1 answer

Dr. M. Christine Lee answered

Yes: Herpes simplex is contagious especially when there is a sore or blister (regardless of whether it's open or not). Herpes is even contagious without having any visible lesions. There is viral shedding preceding appearance if a blister which can be passed on by contact usually with kissing.

Dr Livingston agreed

Answered 3/16/2017

5.3k views

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A member asked:

My boyfriend has a unbroken cold sore on his upper lip he performed oral sex on me am i in line of catching it or is that only when it's broken open?

A doctor has provided 1 answer

Dr. M. Christine Lee answered

Dr Livingston agreed

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