Books about friendship breakups, guilt, and moving on when you’re the one who dropped the ball.

Hi everyone,

I’m currently going through a friendship breakup with a group I met online, and I’m having a really hard time moving past the guilt and the feeling of isolation.

To be honest, the breakup was largely my fault. I was dealing with a lot in my personal life, my mom’s health has been declining, and I was completely overwhelmed with work/school. Because of that, I shut down and lacked proper communication for a long time. My friends eventually decided they were done with me, and I honestly respect their decision, but it still hurts.

Ever since I joined that group, I often felt like the "black sheep" or like I didn't truly belong, which made the final fallout feel even more lonely.

I’m looking for book recommendations (fiction or non-fiction) that deal with:

Friendship breakups/endings.

Learning to forgive yourself when you’ve made mistakes or "dropped the ball" in a relationship.

Feeling like an outsider or the "black sheep" in a social circle.

How to heal and move on when you feel like the "villain" in someone else’s story.

I’m open to any memoirs, contemporary fiction, or even self-help that isn't too "preachy." I just want to feel a little less alone in this.

Thank you in advance.