My SO and I met skiing, and that and hiking are the physical activities we share. Long ago, she rode bikes with me ... even went for a short tour or two. But the cycling bug didn't bite her the way it bit me.
I would say that she "tolerates" my bike obsession, but it is more than that. I used to feel guilty when I would leave for an entire Saturday to ride with my friends, leaving her at home. But no more. On the rare weekend Saturday I am not riding and staying home, I think I am more in the way than anything else. She needs her alone time in the home too, and that is what she uses Saturdays for. And it is nice to have a weekend day only with friends.
Honestly, it's all OK with me. It is one of those things that long term couples do ... adapt to one another.
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Proud parent of a happy inner child ...