This is a throwaway because my friend knows my reddit and I don't want him to see this post in my history.

So back in highschool I was interested in this girl, that will refer to as Katie, and my buddy also liked her during this time. He begged me to let him ask her out because he had never had a girlfriend before and was feeling really guilty because he mentioned how I had already had two girlfriends before her. So I agreed to stop pursuing her, and I ended up ignoring her texts to try and let my friend get his chance.

The two ended up finally getting together senior year and dated until we started our first year college, where she dumped him. My friend never told me exactly why she left him, but I knew it hurt his feelings because he was ranting about her breaking his heart for a couple of weeks after the breakup. Eventually me and Katie started to talk again because she reached out to me on Instagram and I was hesitant at first to even respond because I didn't want to hurt my friend because I knew how much he loved her. However he started to date his new girlfriend recently so I tried to bring up the topic with him and mentioned me and Katie were messaging again and he lost it.

He was yelling at me for breaking "bro code" and telling me that I was a dick because I said I wouldn't try to get with Katie anymore. I told him she messaged me first and was asking about why I stopped talking to her and that it hurt her feelings because she liked me, and I was trying to explain we hadn't done anything and I was just chatting. I just wanted to see what he felt about the situation, because she kept trying to talk to me and call me. I honestly can understand if he's upset because that's his ex girlfriend, but I feel like this was inappropriate because he did this in front of his new girlfriend when I was over at his house. I feel really humiliated for myself and sorry for her because she looked upset he was shouting about Katie.

I tried to explain my side but he ended up telling me to leave, so I did and now I'm sitting at home trying to figure out what to say to ease the situation with my friend. I'm thinking about just blocking Katie, even though admittedly I still like her but I've always respected my friend's relationship because I wanted him to be happy with whoever he loved. I always was his biggest supporter when he tried to flirt with girls in highschool because he always complained about not getting a girlfriend and how girls didn't want to talk to him. My friend is really important to me because I've known him since we were kids and he's like a brother to me. I just want to know if I did something wrong, and I also want to know how to fix this situation because Katie is still texting me and asks to call.