I totally relate to what you wrote. I am still mad at both my high school girlfriends. It's completely ridiculous, but I am. And I have good reason to be. High school is very hard. I don't think your experiences are out of the ordinary at all. The issue is whether these feelings come to gnaw at you and interfere with your life, or if you can manage to kind of let them come and then let them go. That's what I do. I acknowledge them, and then I let them just march on by. So, even though I have these negative feelings, they're not really interfering with the living of my life. Hopefully, you have figured out what works for you, so you don't stay mad all the time, because that would be bad. Wishing you all the best.