<human>: So my girlfriend 's best friend was rejected by me years ago, still holds a grudge. This woman is a promiscuous immature stay at home welfare recipient, while her husband goes to school to be a nurse. They are a walking talking reality show, both always cheating on each other and they both know I don't like them or having them over because of their life choices (their choices, disagree but not being judgmental) I have blocked them both on Facebook for quite some time and blocked numbers from my cell... My girlfriend still talks to her friend regularly as they have been best friends for 18 or so years. Yesterday the woman told my girlfriend that her husband sent one of his girlfriends in for something we don't have, knowing we don't have it to start and issue and try and get me to mess up and complain against me. Well I have been there 8 years and am a lead staff, I knew what to do and handled it like every other customer, recommended options and she walked away happy... In all it was an actual pleasant experience, I tried to be as efficient as possible because she had a small child with her. well my girlfriend's friend tells her that now I'm gonna lose my job (not actually worried about this) because her husband is going to make up some bs about how rude I was to this girl in my store. They have details about the interaction that they wouldn't have if this girl wasn't in on it. She told my girlfriend that its because they both hate me so much. Only interaction I have had with the husband is at a BBQ housewarming thing where he called me a baby killer (us marine vet, combat wounded so I wear a hat) and I actually kept my calm and just grabbed the beer out of his hand and told him to leave. 

What should I do if anything? Should my girlfriend also stop contact with these people?

Summarize the given text in a few sentences.
<bot>: girlfriend has a friend that is trying to get me in trouble at my job because they don't like me. What do