I work with a guy and him and his wife are definitely in an open relationship, I barely know the guy and I'm fully aware of this fact however there are people that have worked with this guy for nearly a decade and they whisper about it, like yeah she knows, y'all are idiots.

Work parties also seems super weird, but bbq makes me think friends and family. Of course if the married couple is open or whatever then sure.

That aint normal in Murica. At least not at the bbqs I go to.