An ex who has become a fuck buddy where the only connection is sex. Not to be confused with friends with benefits as you're really not friends.
You: Hey you know that person I used to date a while back ago?

Friend: Yeah I thought you two broke up?
You: We did, but started having sex again like we're fuck buddies. I guess that makes them my ex-buddy, huh?
Friend: Yep sure does!
by XplicitX September 13, 2014
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