Just say " sorry mate you are to late, I have just been sign up by one of your mates. Sorry to waste your time."
or something similar to that.
Or I have a yacht, therefore no time or money to spare.
Just have fun with them, it's a game.
I had a good long chat with a lady in Melbourne, she was an Aussie. Pity I am in Cairns I would liked to have met her.
Enjoy your life, you only have one
