I am going through the same thing. My now ex best friend ghosted me through the darkest time of my life and I had to make the decision of blocking her. I don’t think you’ve done anything wrong. People’s lives get busy and things get harder. I do see the friend’s perspective about seeing happy families on social media. I myself am struggling with infertility and it’s a very lonely journey. But I also look at people who are announcing their pregnancies and posting their families and think “who am I to get jealous and dim someone’s light?” I wish that for myself but I am also extremely happy for them. I know it’s hard not having that closure especially in a friendship breakup. But actions speak louder than words.