Exterminate!

So the plan for today is to go to a Doctor Who convention. I had no idea one was in town, but my friend really wants to go for a couple of hours.
However, she has someone she is going with who, she thinks, is trying to be her boyfriend. She is not exactly on board with this plan. So I am supposed to show up twenty minutes after them and join them. A “Three’s a crowd” situation. She even gave me signals for use at various times. The I-want-to-get-the-hell-out-of-here. The I’m-having-a-great-time signal. Even a give-me-a-bit-of-time-alone one. This is complicated.
Hope I meet a dalek.