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I don't think it's really something to get worked over with, unless he doesn't wave first multiple times consistently.

Out of curiosity, I took a read through this thread (all 9 pages, yes!). Initially, I sympathized with OP, as I was in a similar position myself for a fair while up until fairly recently. I believe...

Stay friends, do not go beyond that.

You don't want to end up potentially making serious drama, do you?