[jeremycole]

IMHO, this sounds like you're jealous that your friends A and C have a way of communicating (and keeping apprised of each others' situations better than you're able) that bypasses you. It's your choice to remain uninvolved (and I actually respect that quite a lot), but you can't reasonably be annoyed that others who are involved in it bypass you.

[tinymollusk]

I don't think this is the case, but I can see how it's an appealing interpretation. I do experience a brief moment of annoyance, but it feels more like an annoyance that we lost an opportunity to reminisce and re-connect over a mutual friend. The call and response of "did you see this?" and "Yes." stops the conversation more than if they respond with "no", and we can relate over a story.