Money is one of the primary points of argument in relationships, and oftentimes the person making more begins to resent the person making less. In this case, the person making less was OP. She went on a luxury shopping spree without telling him the amount she was going to spend, which she admitted was a bit substantive. OP told her husband she would stop buying luxury items, but then bought sandals for the summer. He got so mad that he called her a ‘free loader’ on his investments and added tha…