you're sleeping with them, and you're not sleeping with anyone else, but they're not your boyfriend. You want to see where things go, without committing to a relationship. Somewhere between casual and serious.
by Mexi-ginge July 17, 2011
After several months of casual sex followed by some serious dates, Jill saw Mark as her boy-thing, but she wasn't ready to make it official.
by Argonfire876 June 29, 2008