When my x and I first started dating, I was injured, so as I started coming back and since the relationship was new, she and I would occasionally run together. then, as I started getting in shape, I would run and she would ride the bike next to me. She even entered a race, nikefunrun or something like that, I raced and then turned around and ran w/ her to the end where she kicked it up at the finish and then puked after finishing. Awesome, i thought. I had never been prouder. So after that I fiquared "Wow" she's kinda really into this. So I started encouraging her even more. Suffice to say, went totally downhill, never ran a race again, stopped running, working out, biking. everything. ugh boy, a nightmare. Don't push her, just causally share your ethusiasm w/ her. How long have you been together????????