I too am really sensitive about these sorts of things and tend to feel left out if I am not invited to do something, even if I end up declining because I don't want to do it, and that happened with some frequency back when I was working since I am introverted and pick my social occasions very carefully.
I am glad it was no big deal after all, VBC, but I too would have felt bad at the time.
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow