Summarize the following:
If you expect to be forgiven and aren't, you're understandably going to be really disappointed. If you expect very little and are forgiven, then you'll be a lot happier. Prepare yourself for the worst but hope for the best. If the person does not forgive you, show empathy. Say something like "That's okay, I don't know if I could forgive myself either. I just hope that time can bring us closer together again. I really value your friendship." Don't get mad at the other person for not forgiving you. Forgiveness is a privilege, not a right. Remember that you're more likely to be forgiven if you're a likable and understanding person afterward. Small transgressions may be forgiven easily, but some wounds need time to heal. Do not expect to be forgiven easily if what you did was especially hurtful. Even if your request for forgiveness is denied, continue trying. Apologizing in person is usually the best method, but if that is impossible, reach them through other means of communication. Text them, send emails, but do not give up.
Expect little, but hope for the best. Be understanding. Be patient.