When your other half's employer starts the cycle to work scheme and you offer to go bike shopping with someone in the office that you hardly know just because……….
When you have got in so late from a night ride that you have to sleep on the sofa to avoid getting mud in the bed because if you have a shower it will wake the other half up and you will get a lecture about coming in just before dawn on a school night(yuck).
When you no longer feel that 4 bikes is enough for anybody to own at any one time.
When you are already planning your next build before you have even finished your current one.
When you have the secret credit card for those naughty purchases which you hide in the shed/garage for a while till you can honestly say when questioned 'what that, oh I've had that for quite sometime you just never noticed before'
When you spend hours at work surfing bike sites while you really should be earning some money by getting on with some work.
I could go on but…………..