Am I a bad gf for staying in contact with childhood friend?

I met my childhood best friend when I was two he and I were friends up until he moved when we were about 11. A couple years later we found each other on social media and started talking again. My boyfriend already didn’t like that I had a friend that was a guy so I never hung out with him, just stuck to texting him. Sometime later my boyfriend and I broke up due to him thinking he was having feelings for someone else. During that time we were broken up, me and my friend flirted for a little to see if there was something else there, I found myself finding it weird and only having platonic feelings towards him. He did not feel the same, he ended up catching feelings for me but we decided to stay friends after i distanced myself from him a bit. A little later my boyfriend and I got back together, I told him what had happened and he doesn’t want us talking anymore. I think it’s unfair as this is my first ever friend and he was an important part of my childhood and I don’t have very many other friends. I’m just not sure what to do here. My bf is self conscious of him and I talking so I agreed not to hang out with him and limit our chats to very occasionally and he still gets mad at me for it.