fuck buddy n. taboo slang a person with whom another person has a relationship based on casual sex only. 'fuck buddy' also found in these entries: FB.
Sep 28, 2016 ... People are skeptical of fuck buddies. They're like: How can you have sex with the same person, again and again, without falling in love?
Dec 1, 2017 ... Everyone likes sex, and everyone likes their best friend. So on paper, combining the two together into one big beautiful fuckbuddy ...