That's also lots of theft from convenience stores. 20 years ago I had a friend who, as manager, knew that the cameras didn't catch what happened when the lights were turned off at the end of the day. And he had the key... I made sure never to go to that store, either before or after closing time.
Since he lived closer to the mountains than I did, I was over at his house a lot. Stolen items were all over the house, and it seemed possible that he would be caught eventually. We had both recently moved to the area from several states away (not intentionally, we were both surprised) and it would have been easy for a cop to imagine that we were in cahoots. If I get arrested I want it to be for a good reason...
Your should have turned him in - for your protection. My uncle had a roommate pulling something like that. (the roommate was actually a cop who would find open doors and then rob the place while checking out why the alarm was going off). My uncle figures that given how quick his roommate was arrested after he turned his roommate in that they already know his roommate was doing something and were just looking for evidence because there is no way he wasn't involved in the crimes.
