If one of you had oral with someone then with each other, you could have passed it :/

If one of your parents had herpes when you were conceived, or your mom had/got it while she was pregnant with you, it could have been transmitted that way.

Somebody's lying .

False diagnoses?

if you had oral sex and one of you had a cold sore that would do it

theres other ways to spread it besides sex or kissing. sometimes just physical contact with a cold sore or someone with a cold sore can cause herpes.

I guess there was, to quote that other FML, "Herpes in the air"

Either he cheated or you both drank from an infected cup. Could happen, dislike me all you want.

It's possible to get such things from parents during birth. Have your parents and his checked, maybe?

Obviously he cheated.