I know someone (UN-named) who was very close relationship wise, who asked for help with a school loan, which I agreed to co-sign, it was not a huge amount, yet near the end for no particular reason with about $600 left, she stopped paying, and I had to finish off the loan. My wife intervened so no confrontations ensued, but it was a cheap lesson learned, fool’d me once. Several years later she asked if I would co-sign on a house haha, no thanks. The house they got into is now being foreclosed on if they can’t get it sold.