No need to keep up. I'm a total newb, and will not push myself beyond what I'm okay with. I've ridden with some amazing guys, on amazing bikes -- imagine the best riding club in Northern California -- and I never felt rushed. Someone was always willing to keep me in his mirror, and work with my pace. That's the great joy of a group ride. Riders caring for riders. You yourself noted that Felix never dropped you altogether, and was always there waiting. That's excellent decorum, good riding manners. You needn't ever feel you have to keep up when it's not comfortable. There's a vast difference in maneuverability between your bike and Felix's.

Enjoy the ride. Enjoy the ride.

cheers