Look on the bright side. Actually, it's nothing. First, your mother must borrow money for a reason. This is the first question you need to find out. Second, your boyfriend knew that your mother borrowed money from him, but he didn't tell you when he couldn't turn over the money. He promised to lend money to your mother, which shows that your boyfriend loves not only you but also your family. This is very rare. Definitely manly. If you think clearly about the first question, you will know if your mother is thinking about you.
Actually, it's just a matter of your own mentality. You can tell your boyfriend that you can pay back the money your mother borrowed. Of course, your boyfriend won't want it. If you care more about your boyfriend at this time, you might as well pay him back. ) or you can call your mother directly if you have an economic foundation.
But I think your mother must have borrowed money for a reason. Don't get me wrong, she worked hard to raise you.