Jim,
While your girlfriend's son sounds pretty sport-oriented, there might still be a possibility to do some overnight camping together at one of the many campgrounds in your beautiful region. My father and I took our last tour together through the Diamond Peak Wilderness Area in 1991, the week before his 74th birthday. Though we had different touring speeds and styles, we surely had a nice time together, and it made for some wonderful memories I cherish to this day. He's 94 now and can't do those sorts of rides at present, but the other day we got out the slides we took on the trip and had a nice time reliving the adventure. I'm 51 and wish I could turn back the clock a bit; we sure had fun together.
Anyway, riding's fun at whatever level one does it, and it's great to hear he's getting interested. Finesse will come with time, and it sounds as if he's well on his way. He's got a good mentor in you.
Hold on to Chengdu in 2014, Jim; no doubt at all you'll make it.
Best,
Dan.