Mrs
@BoldonLad joins in with the cycling. So, generally, not a problem. I am probably more "keen", and, I do sometimes stretch the rides out to greater distance than agreed, which sometimes causes slight friction. But, in general, it is a joint hobby, although, we do, on occasions, cycle separately, ie with other friends/acquaintences.
As for spending, we are both "second time around", and, both, previously had financially inept partners, so, we have always operated separate finances. ie A join account (to which we both contribute) for "bills", and, our own current accounts to spend as we wish, although, in practice, we often discuss and agree in advance of spending "significant" sums.