They were fighting and didn't know why.
Finally she blurted out that he seemed angry as soon as he was inside the house. But he would come home, open the door, and proceed to trip over shoes, coats, and backpacks. Ugh!
When you live with people it is the accumulation of small annoyances that build walls in relationships. Of course sometimes there are large issues at hand but more often than not it is the daily "ugh!" that divides us.
Do yourself a favor and move the boots.