Dear LIB readers: My GF is cheating on me with a soldier, I want to go to the barrack to confront him

From a male LIB reader (who wants to die soon...lol). Read below...

This is really a serious situation for me and I would need the advice of my fellow LIB's. I found out that my girlfriend of 2 years has been cheating on me with a soldier and I'm planning to go and warn him at the barracks. Should I go or not?