Lofthopper having been married 35 years I understand the problem that you are having and I think that I might have the answer.
In recent years I have managed to change my bikes fairly frequently but not without having to endure a dark period in the house where my beloved and I just grunt to each other.The way I have found to reduce this atmosphere is to gradually very gradually mention what I intend to do.This can and very often does mean months before I purchase whatever I want to.A for instance is that several months ago I reminded her who paid of the mortgage when I took early retirement and then added you do know of cause in 2010 when you retire and get your lump sum I will want to change my bike.After she had calmed down I then said I want to get a GSA1200 and showed her pictures of one on the net. Although still not that impressed with my idea at least I have made the first move.Now I just need to leave magazines out with oictures of it on the coffee table.Everything has to be done subtley.
Now thats how to deal with a big item but if it comes to smaller stuff like gloves helmets etc you need to be telling the other half how you have had your existing items are past their sell by date and for safety need to be replaced.And add wouldn't it be awful if you didn't and something terrible happened to you.This method is called pricking ones conscience and 9 times out of 10 it works.
Now wheres that latest GSA Road Test I am off downstairs to make my beloved a nice cuppa on her day off...... Am I a creep you bet. Good luck