How Did You Know When It Was Time To End A Friendship?

Arguably the most painful kind of breakup there is.

If you've ever had a friend breakup, you know how painful, but necessary, they can be.

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You probably also learned a lot from the experience. Maybe you realized that someone who only talks about their personal problems and doesn't care about yours is a toxic friend.

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A toxic friend is also someone who makes you feel bad about yourself, drains you physically and emotionally, or guilt-trips you constantly, among other things.

Perhaps you discovered that it's really, really hard to adjust to your new life without your old pal in it, and have had to re-learn how to enjoy activities without them.

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Or maybe you've come up with new communication methods, so that you don't have to go through another friend breakup anytime soon.

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Tell us what you learned from your friend breakup for a chance to be featured in a BuzzFeed Community post.