Would you out yourself to another MNer?

[Mehfruittea]

Am being vague with this but just found out that someone else on MN will be at the same small group that I go to tomorrow.

Would you let them know that you are also on MN? Or is it like fight club, we don’t mention MN in real life?

What would you do?!

So you'll know who they are instantly because they'll be the new person, but they won't know that you know?

Name change then message with new name to say hi, I'll be at x group as well, nice to meet you in advance. Gives them a chance to name change too and at least stay semi-anonymous.