I am a 21 year old male who works with a 17 year old female. This girl is not the best worker to begin with. I am friends with her in Facebook but have never really been interested in her.

Last night I get a message from a guy I do not know. He says to stop fucking with his girlfriend, this is the last time he will tell me. I message the girl and she confirms that this guy is her boyfriend. I want to message the guy back and ream him but I want this to look one sided. Thinking about taking this to my asm tomorrow.

Can this girl get in trouble for this/ do I have any sort of a case? Looking for keywords to use during the meeting/ways to spin this in my favor.