Other than your parents, your pals are the people you’re most likely to butt heads with sometimes. Because you and your besties know each other so well, you guys probably know exactly what buttons to push to make one another upset.
As a result, it’s a lot easier for you to hurt those you heart the most. When that happens, it’s super important to apologize–but it’s also integral to keep your tiffs private and not drag other friends into the mess, because that’s only going to make things worse. This means no venting to mutual friends and no passive aggressive Facebook statuses, which will only make everything more dramatic!
Give yourself and your pal a little time to cool down, and if things are still tense, address the issue–but use “I” statements. If she did something to irk you, tell her, “When you do X, I feel Y, so I reacted unfairly. I’m so sorry and I love you to death, so can we talk this over?”
Alternatively, if you started it–be honest with yourself about this!–you need a bigger mea culpa. Tell her how much her friendship means to you and why losing her would be devastating, and then apologize your butt off for whatever it was you did.
This enables you to both say your piece and leave the ball in her court. If she’s a friend worth having–and if you didn’t mess up beyond repair–she’ll come around.