I think your mother-in-law is not very kind. You lent it to him, not to him. He should pay it back, even if you are married, let alone not married yet. Not only did he refuse, but he also complained to his son. If your boyfriend didn't tell your mother-in-law, he still accused you. I think you should examine whether you should get married. If you think you can bear it, get married. If you can't bear it, it's better not to get married. Marriage is a lifelong event. Just be happy and healthy. I wish you happiness.