Sex Ex 

A person (male or female) that you used to date (but no longer do), but still will sleep with you now and again.
See also Imaginary

Ex: "Hey, I know we stopped dating because you're tremendously creepy, but I think we can at least be sex exes, don't you?"
Other person: (No response; tends not to talk to people he's imagining in his head)

Sex Ex by lsiusA August 16, 2011

sex ex 

An ex-lover with whom you have sex.

I had ex sex with my sex ex the other day.

sex ex by Oddsock April 17, 2011

Sex Ex Full 

Successful after leaving your ex

Von seems very happy and sex ex full after leaving Connie!!

Sex Ex Full by tryingnewthings June 13, 2018

ex sex 

(v.) To indulge in sexual intercourse with a former partner.

Have some ex sex-you know what she likes!

ex sex by Gumba Gumba May 26, 2004

Pre-Ex 'Sex' 

The mechanical, uninspired act of passionless intimacy dutifully completed by individuals who's long-term, expiring relationship has fatigued from overwork, emotional exhaustion, diverging interests or mutual contempt.

When you're given under 3 minutes to 'do yer business' while she answers emails and texts...the best Pre-Ex 'Sex'...EVER!

Pre-Ex 'Sex' by YAWA November 24, 2019

Ex sex 

Is when your dick feels homesick and nostalgic.
Jokes aside, it's one of the easiest kinds of sex to get.
It may ruin your life an get you on the verge of "please come back to me" bullshit. However, it may also make you "whole" and keep you from idealizing the girl (and reflecting over the relationship you used to have)

I tell our mutual friend "say hi from me when you meet her".
5 days later some crazy ex sex happens. It literally takes you next to nothing to grab some ex pussy action.

I gave Jackie a call and we had some ex sex. Why? He knows my body well, those one night standers don't really come close.

Ex sex by DJ Blowback January 23, 2019

EX Sex 

Having sex with and ex girlfriend/boyfriend

Jena is having ex sex with brian

EX Sex by chops1986 November 24, 2010