think I'm going to have to wait for a 'cooling off' period before any reasonable contact starts up again b/t W and I.

Yes, exactly what I was going to suggest. It's all about context. Pursuit seems like pursuit if it's in the context of pursuit. If you haven't pursued, and then suggest a lunch to catch on things, it doesn't seem like pursuit anymore. And I really like the idea of using a "back door" sort of invite like spur of the moment "gee I'm hungry. D'ja eat? Wanna get sumthin'?" That's ingenious.