I was friends with a girl for a few years, but suddenly we had no classes for a couple years, and we never talked. After 2 years, I decided to do something bold and write up an e-mail, explaining what I thought of the situation and that I wanted to start being better friends again. She replies, saying thing that everything I said was blown out of proportion, we really weren't that great of friends, and that she had no time with her busy schedule to have another friendship. She said it in the most formal, polite way, but it was one of the worst facepalm moments I've ever had, not to mention that it was the most official end to a friendship I know of (plus I did and still do want to be friends with her. It's just too awkward now, a lot because of me...).