I understand that you made a mistake. You say you get frustrated when changes are made without communicating to you, however, why would you rashly delete anyways? Why wouldn’t you ask your bf first if he had used your Switch for any particular reason? There wouldn’t be any other way for the data to show up on your Switch since stuff doesn’t just appear on them for no reason, so I find it somewhat inconsiderate to just so readily delete it without figuring out why it was there first. Next time, try to pause for awhile before acting. I understand why he is so upset. I would be very upset too if all of my Violet data got deleted from my Switch like that. It would feel like I wasted a huge chunk of my time and hard work for nothing. He shouldn’t stay mad at you forever, but he totally has a right to be upset.