Sounds as if you need to consider applying the old principal - "Absence makes the heart grow fonder."
Suggestion: buy one of these: http://www.rhinoshelters.com/5-instant-garages
, park the old e90 in it and walk away from it for a week or so. When you finally get back to it and unzip the door, the sight should reignite that old spark - so to speak.
It works for me.