This past May, my project lead and I were flying to London, both in business on the same flight, and I upgraded my segment with a VIP and did his as well, to avoid any bad blood. However, we were returning on different flights, and for the week before his flight, he kept bugging me to upgrade his return flight, at least three times a day. Finally I gave in to get him off my back, even though whining and sniveling is a personality trait I find annoying. So now I've learned to avoid that mistake again, flying and upgrading with anyone in a superior position. I will even fly out of the way to ORD to LHR to avoid this situation again. Waste of two VIPs, but live and learn.