It's happened before guy said he was on his 40s he was at least mid to late 60s but I'd always be polite stay for quick coffee and a chat and just nicely say no thank you I'm not feeling it but best of luck
Haven't had it happen before but I would have to say if it depends on how old the pics are to them. I might stay for a coffee but if they are miles different I would probably say look thought I was meeting someone else sorry and good luck
I think patience is key. being polite helps for sure. girls get tons of stupid messages so I try to stand out. if they say social first be prepared for no ride first date!