Apology Letter For Crying
Dear {Recipient},
I'm sorry for crying at {event} on {date}. I didn't mean to make a scene, but I was so overcome with emotion that I couldn't hold my tears back at the time.
Looking back, I realize my behavior wasn't exactly appropriate, and I'm really embarrassed for embarrassing you. I will promise to my self-control to avoid such incidents in the future.
Thanks,
{Your Name}