I think it's in the Bible somewhere

After Lorein and I married, I found to my dismay she's a middle squeezer. I, on the other hand, am more civilized and so squeeze the toothpaste tube from the bottom. It's quite obvious that squeezing from the bottom is better since it eases toothpaste retrieval near the end of the supply. There is also a direct correlation between squeeze placement and cap filthiness. Tubes that have been middle squeezed tend to have their caps covered with old, crusty paste, often precluding the tube from being closed, which of course leads to further crustiness and general hygiene erosion. On the other hand, bottom squeezed tubes are clean, orderly, and are well-known to lead to a higher level of happiness. Since all intelligent people understand this principle, however, I do not feel the need to elaborate further.
Anyway, even though I was a witness to Lorein's shame, I approached the problem as any loving husband would and bought my own toothpaste tube. After a short while, I was able to train Lorein in the ways of enlightened people everywhere, and we discarded the extra tube. Imagine my dismay, then, when I entered the bathroom and saw this:

Ahhhhh!! What fiendish ghoul entered my sanctuary to disrupt and sully?! After some investigation, it turned out it was Lorein! I was mystified -- why had she suddenly returned to her brutish ways? Was she mad at me? Had I angered her in some unknown way? I asked her, but she responded in the negative. Actually, she said "at least the cap isn't dirty". Again, as a loving husband, I felt I could live with that. I mean, Lorein has a baby to care for and is working part-time; I could adjust to a middle-squeezed tube so long as the cap wasn't dirty.
So again imagine my dismay when a few days later I went to brush my teeth and found the cap covered in old, crusty paste. And lo and behold, the crust was so thick it was impossible to close the cap. I didn't know what to do. I again asked Lorein what I had done to deserve such treatment, but she still kept her secret close. And so I ask you who know Lorein as your friend: has she deposited her secret with you? Do you know the true purpose behind this nefarious deed? Please inform me and you can quite possibly take credit for saving our marriage!
Oh, and another thing. We bought the six toothbrush pack at Costco. Under California community property law, three of those toothbrushes were rightfully mine, yet Lorein used four leaving me with only two! Why did she hork my toothbrush? Was it merely because it was pink? Did she think I would not want a pink toothbrush? If so, she's probably right, but she could've at least asked me. Oh, I am to be so pitied.