Friendships are wonderful, but they can also be hard. We can't all be Oprah and Gayle, you know. Sometimes you think someone is a best friend forever and then you get burned. Other times, something out of your control happens to pull you two apart. If you find a lifelong friend you're lucky, and if you lose a friend, at least you've learned something. On a recent Ask Women Reddit thread women are sharing the mistakes they made that turned their friends into frienemies.
Dating them. Just because we're good friends doesn't mean we're compatible as romantic partners
I will never work with a friend again. I went out of my way to have her hired at the store I worked at. She ended up spreading nasty rumors about me to all our coworkers and embezzling like $2k.