I'm the cyclist at home. Well, I should say that I'm one of the 3 cyclists. The non-cycling person is my wife and she can't cycle, so I can't "pressure" her into cycling.
Now that we have kids (the 7 and 3 year old daughters are the two other cyclists), cycling is also a way to take the kids away from home. As she is now a stay-at-home mom, she enjoys touring libraries, book stores and the like while I entertain the children. And the children certainly prefer a bike ride to Cap-Saint-Jacques (with ice cream and park activities) than a plain full day to the playground next door. My solo rides, I tend to do them at night, as we tend to alternate between "who gets out once the children are in bed".
BTW, I'm also intersted in "utility cycling", that is cycling to go somewhere -- commuting, shopping, or even to a playground -- and some leasure rides, but not into racing or similar fast riding.
I'm afraid many elements go into the picture:
- How much time goes into cycling, vs other activities? Many people work 8 hours per day (9 with lunch) and add 2-3 hours of car-commuting. Why not commute on the bike instead of adding bike rides at the end of the day? That way, he could get his full share of cycling... and have time left at home.
- Does he have other conversational elements, apart from cycling, cycling gear, Lance Armstrong and the like?
- You said, CyclingGF that you don't like cycling? Would you be interested in utility cycling, like commuting, for example? Likewise, any other activities that you would care on your own? or with friends (who care whether they are males or females)? If you develop interests of your own, than you'll have something to annoy him withl yet, who knows, he might find that you finally have something interesting to talk about!
One serious issue I see is that you want to spend time with him and he wants to spend time doing something (cycling). I doubt it would be any different if his activity was basketball, canoeing, train modelling, etc., unless it happens to be an activity you enjoy too. On the other hand, he has found an activity he enjoys, or, worst, an activity that enables him to stay away from home.
The worst you could do is try to change him. Forced changes (whoever adapts) rarely work in the long run.
However, I'm afraid that both of you need to reflect on your relationship and ask yourselves what attracted you to eachother in the first place, and whether or not these elements are still in place. And, I hate to add: the sooner you do it, the better it is. You might be better to call it quits.
BTW, I also know of a female friend of mine who was involved for 2-3 years with a man. At first they thought they had a lot in common, but she eventually realised they had a lot of activities in common: cycling, walking, camping, etc., but no real common bond. They split... and she eventually met another man who shares less activities but seems to share more deep roots with her.