as a former escape room host i highly recommend doing an escape room as a first date. its a great way to learn how ppl react under pressure and how well they collaborate with you right off the bat. also more than once ive seen people enter an escape room as a couple and exit broken up LOL its a fantastic litmus test
sorry to broadcast ur tags but this is also a valuable part of the litmus test! it seems like you learned a lot about how this person makes you feel in their social group. they didn't go out of their way to include you, and neither did their friends. therefore you can come to a pretty good conclusion about how you might feel being part of their life outside of an escape room; someone who doesnt include you or your feelings in a game is likely going to do the same in other situations