Ditto this!! I can gauge my training/racing with his reactions on the course. If I get a "WOW, you're having a GREAT RACE!" I know I'm doing well even if I feel like crap. Or during a SAG ride, if he says "Great riding! I've only been at this rest stop for 5 minutes!!!" I know I'm biking well.
I do get excited when I beat him on kick sets in the pool. Too bad I'm wearing fins and he's not.