Dear {Receiver}
I’m so very sorry for what happened the other day. You know me: I would never intentionally do something like that if I knew that it would end up being a {hurtful, embarrassing, awkward, etc…} situation.
I can’t say what made me do something so silly. Perhaps I just have a very flawed sense of humor or my terrible read of situations. Whatever the cause for my bad behavior, it was inexcusable.
Hopefully, this will be one of things we look back to and laugh. Until then, I’m willing to do everything I can to make it up to you! Please get back to me whenever you have a moment and we can talk about it.
Sincerely,
{Sender}
{Sender}
