A woman that is one level above a jump off but always a step below the wife, wifey, girlfriend. A side bitch must know her part. She does not get holiday's, birthday's (other than her own). While he may meet your family. You will never meet his.
by class09 January 31, 2009
A female who is having a romantic or sexual relationship with another female's significant other or spouse. She may truly be in love with the "taken" individual. The "taken" person may or may not necessarily reciprocate the feelings, but the fact remains nonetheless that s/he has a "main girl" and is cheating on her with this female.
by Fredricka-Louise July 25, 2015
Usually a girl best friend that's pretty close that you wanna fuck when you have a girlfriend. Most commonly an ex-best friend/friend of your girlfriend.
Tom: Damn Tracy is pretty hot i wanna make her my side bitch
Lance: Dude what about your girlfriend Hannah?
Tom: She doesn't need to know about my side bitch
Lance: Dude what about your girlfriend Hannah?
Tom: She doesn't need to know about my side bitch
by dic...tionary October 28, 2014
when a girl is not exactly his girl. Someone who he treats as he should his girl but never commits to her. She usually feels like shit.
by AlleyKatt December 30, 2015
Side bitch is a female who can't get a man of her own so settles on being a fuck. Ladies if u choose to be a Side bitch careful not to catch feelings and when u in the presence of the Main bitch u better step ur ass to the side where u belong!;)
by Chiludo I think not!! February 18, 2016
Noun - (Pronounced: Side Bitch Squared) - A woman that is content being the 3rd female in a guy's life. She is the side bitch to the side bitch or the Number 2-Number 2.
by Chalmette Mayor June 30, 2015
When one person in a commited relationship suspects the other is being unfaithful to him/her, by cheating with someone else secretly on the side.
Regan: I know Meredith is cheating on me. He's been acting weird lately.
Holden: Weirder than usual? It could be all in your head.
Regan: No, no, no. He definitely has a side bitch--and that side bitch is CASSIDY.
Holden: Weirder than usual? It could be all in your head.
Regan: No, no, no. He definitely has a side bitch--and that side bitch is CASSIDY.
by Babydoll75 April 5, 2019