Dream About Old School Friends Ex Girlfriend

I had a dream that I was in my old school. I think it was the first day of school and I met my old friends. Two of the friends didn't really care about me but I gave a high five to the other and she accepted it. They were both really sweet and caring despite having a traumatic childhood. And I meet with my other friend who is standing behind me. Her hair was really messy, but in the waking life her hair is straight. We did some questionable stuff together. She picked me up sideways. And later on, I met my ex-girlfriend with her siblings. She commented on my hair since it was short and curly (note, I have average wavy hair on my waking life). She then talked about the friend I met first that they were together (and that friend and her are together in waking life, I think). My ex-girlfriends mom was very supportive even though in the waking life she's against LGBT and dating at a young age. I felt my heart shatter, I think that I remember that in the waking life, my ex-girlfriend told me that she will never replace me after we broke up, but I felt happy for her, even though my heart shattered.