So the other day on my security cameras i caught my manager allowing a former employee behind the counter. In general I do not like non workers behind the counter but this gentleman in particular did not leave on good terms. I held a meeting with her about the incident and told her that because of this it was now a rule that no non employees may come behind the counter. It wasn't something that had been a persistent issue or one that even happened very often, in fact the time she has had someone behind the counter to talk to her has been very minute overall. This is something that only happens a small handful of times throughout the year in fact. Regardless I told her that I no longer want it happening at all and that I was going to strictly enforce it. I am sure by now you all have probably deduced where this is heading, but last night I caught her allowing her boyfriend (not the same guy whom was in the other night) behind the counter. Now I am uncertain of what action to take. I ultimately feel as if this is a giant middle finger to me. My manager is a terrific worker, has a work ethic that I wish everyone had, never misses work, and always comes in even on her days off to make sure the store is good (she does this part without being asked or told, she just wants things to run smoothly always) . This puts me in a predicament. I know she had no ill intent behind it but the simple fact that this occurred just 3 days after we had our conversation seems to scathing to ignore. I would like some external input on how you guys would handle this situation if you were in my shoes. Thanks for listening to me ramble.