AITA for ghosting my cheating fiance?

So, I basically did what the title says, but for context: I (27F) dated my ex fiance Jonathan (29M) for four years, and we had been engaged for a couple of months. It was a good relationship, and I truly thought we would spend the rest of our lives together, but I guess I was just too naive to see the truth. To keep it short, I found out he had been cheating on me with a mutual friend for a couple of months, and that group of friends on particular was covering up his affair. They were all acting strange, so I went through his phone and I found out they had like a separate group where they even made fun of me for not realizing. I was furious, and my first impulse was to berate them all. However, I ended up deciding to just dissapear from their lives. Any confrontation was clearly a waste of time with this people. When he went to work the next day, I packed everything I owned, took all the money I put on our joint account (wich was a lot, since we were paying for our wedding, we were planning a good honeymoon and wanted to buy a house), I blocked them from everywhere, put my accounts on private, changed my number and I went back to my hometown and stayed with my mom and stepdad. I was so mad I even left my job right away. I told my friends and family what had happend, and then I decided to go on a big trip with some of the money I had put on our joint account. I left for three months, I had the time of my life and came back home like two months ago. I was able to get a job here, and I decided to start dating again. It's nothing serious, but I have been seeing this nice guy for about a month. I'm just trying to put my life back on track.

Anyway, recently my family and friends are telling me that my ex and our ex mutual friends are bombarding them with texts on social media. They apparently want to know where I am and are asking how I'm doing, and they are saying what I did was childish and I should just talk to them at least. I have no intention of this, for me, it's a closed phase of my life, and I literally did nothing at all, I just left. They will never see my face again or hear from me, and I told my close circle to just block or ignore them. AITA?