The exact opposite of friends with benefit
. It's like having a girlfriend but with all the bad parts and none of the good parts. You go through all the boyfriend/girlfriend drama and there's no making out, no hugging, holding hands, NONE of the good stuff. The worst possible relationship you can have with a girl, worse than being in the friend zone
Jon: Yo, where's Michael at?
Alex: He's back there with his not-girlfriend, they're arguing about something.
Jon: Offff course they are.
A girl that you like, do/buy things for, yet aren't officially dating due to a variety of reasons including, but not limited to:
1. One set of parents forbids dating. 2. You want to avoid the drama that comes along with dating. 3. If one of your/her exes finds out, you/she is gunna get they butt kicked.
Guy 1: "Dude your girlfriend is Hot!"
Guy 2: "No man she's my "not girlfriend," Her Mom would kill me if she found out we're dating."
When a guy has a female friend whom he buys things for, takes out on dates, drives places, etc, yet the girl insists she is not his girlfriend (and, of course, does not put out).
If a guy takes a girl to a fancy dinner for her birthday (just the two of them), gets her a pricy gift, and is told how great a friend he is: She's his not girlfriend.
A girl you deeply care about and act like you're dating and everyone THINKS your dating but due to personal or outward forces/choices, you currently can't be boyfriend/girlfriend, but you like to act like you are half the time snuggle-wise.
Tara is totally in love with Justin, but she's eighteen and he's sixteen and she knows his mom will get her arrested, so she's his not-girlfriend.