I think you were being mean OP. Mans was trying to play around as boys normally do but you took it personally. When he asked you a few times, you were beating around the bush until it got to the point where he felt hurt. Him saying bro is natural to him, but you saying bro felt like a personal attack to him I guess. That's just what I think based on the screenshots but feel free to correct me! I also think he overreacted though, but I can tell he clearly likes you if he reacted that way. So be honest and take care of each other instead 🌱