I've found that my Myers-Briggs result tends to vary depending on what mood I'm in on the day I take it, although it's always Ixxx.
When my girlfriend and I moved to Texas, I created an EXCEL spreadsheet with tabs listing each kitchen cupboard and drawers inventory. I'm not sure why I assumed she would be impressed; she was not.
I can't believe she doesn't realise how lucky she is -if I was female I'd marry you based solely on this.
I recently plotted date distributions of all of my favourite paintings and music, and found the process very enjoyable. Perhaps this is an activity that the two of you could enjoy together? 
I did have an interesting experience a few years ago that made me think a little about the OP's question. Having accidentally got myself referred for a clinical diagnosis of Obsessive Compulsive Disorder, I learnt that the first stage of assessment is a questionnaire that leaves no scope for providing explanation/context for one's answers. When it asks about whether one thinks about "dirt and germs" (or something to that effect) on surfaces and items, there is no way to add "yes, but I'm supposed to do this as it's what my employer pays me for". Follow-up discussion didn't really help either - who among us doesn't think that the average door handle or shopping trolley is probably disgusting?
They also ask about numbers and patterns, which didn't really go in my favour either, hence the diagnosis of mild OCD.
My doctor actually told me that she "wouldn't normally say this to a patient, but as a consumer it's actually quite a reassuring trait for someone in your line of work." 