AITA for having disappeared and moved country

Me (F, now 31) and my now ex best friend (now 30), let's call her Julia, come from the same town, we went to the same schools from nursery to high school (just different years), but we started hanging out when I was 15 and she had just started high school in my same high school (which was in another town), because her mother knew my parents and she was new in a class where she didn't know anyone. So her mother thought that would have been a good idea for us to go to school together with either my father or hers, and going out after school. And it was like this, for 4 years. Going to school together, seeing each other during break; going home together; going out after school; spending the whole day out on Sunday; often eating at each other's house; spending the whole summer together. When I turned 18, I started dating a guy, let's call him Mark. And I used to see him Saturday evening and sometimes Sunday afternoon. That summer I had a big fight with Julia because she told me that I used to only think about Mark, always texting him while I was with her and that she wasn't ok with that. I understood and decided to be a better best friend so that I ended up spending the time with her without even looking at my phone. I used to be what I believe is the best best friend: like giving her lots of attentions or covering her when she used to go out with boys (she used to tell her parents she was with me, and sometimes I was even the third wheel). Then we started university in different cities so the only times we could see each other was Christmas, Easter and summer, but we still used to talk every day. In the meantime I broke up with Mark. The summer after we started going out with her brother and his friends. He had a very handsome friend, let's call him Luis. Luis was kind of shy, but funny, was taking to everyone but with me not so much. I started to have a crush on him. The same summer, we went all together on the beach and ther was also his cousin, John. John started flirting with Julia, and they eventually started texting each other and darting. I don't remember how, I started texting with Luis,we used to get along a lot, he was funny, we had lots of things in common, but never asked each other to go out, not even for a coffee. I didn't want to ask him because, even though he was very talkative in texts, in person we used to barely say Hi to me, which made me think that he wasn't interested in me in that sense. Both Julia and John knew about me liking his cousin and none of them talked to him to see if he was interested in me or organised to go like for a walk the 4 of us.
Anyway. Julia started dating John, they used to spend lots of time together, also when she was with me, the only topic of conversation was him. Him. Him. I was talking about other topics regarding me and she was too busy to text him instead of listening to me. Eventually she used to tell me to go out and after 30 min, she was like "I'm sorry, John is coming to pick me up in 5". Or "I will let you know later for tonight" and she used to disappear because of course she went out with him and forgot about me. She did that for few months. Then i decided to disappear. I didn't call her or text her. I had enough. I graduated from uni in didn't invite her (I had only invited my close family). And after that, I moved country without saying anything or even goodbye. She is now married to John and have a baby together. We haven't talked for over 5 years now. Just text her congratulation both when she got married and when her baby was born. Aita for having disappeared?