Boyfriend gets tired of girlfriend's family taking advantage of him and his money, using him to buy things like food for the girlfriend's 27-year-old sister: 'I’ve also been using the (very real) excuse that my bank has been flagging my purchases'

He is the daughter's boyfriend, not an ATM!Boyfriends are sometimes expected more than girlfriends, at least monetarily. A lot has changed in the last decade, but still we encounter families that believe that the boyfriend who marries into the family needs to take care of everything financially, be the provider. As if just being the boyfriend wasn't enough. I don't like the idea that a man has to be responsible for every penny that is spent, especially when it doesn't only include their wife but also her in-laws. I believe that it is possible to get to a financial arrangement between a man and a woman who marry each other, and they should be the only ones deciding it. If they want to be a stay-at-home mother and a provider father, that's fine. It's completely up to them. But if the family is the one forcing those expectations onto the couple, then I believe that they need to place boundaries.In the story of u/ihadnolunchtoday, it seems as if this boyfriend agreed to go to a family vacation with his in-laws without knowing that he was going to be an ATM instead of the daughter's plus one. He did agree to pay for his and his girlfriend's room and food. But he never expected to be re…