February 6, 2019:
She had a thing with her bestie and her bestie's bf.
They called her from their room. Siren song: Join us! Join us! In soothing tones of seduction and surrender.
So that she did, and it was fine, and she told me, "If I'm gonna have a threesome it might as well be with my best friend."
But she seemed troubled, and later their friendship changed in ways she did not anticipate.