It's your ex boyfriend or ex girlfriend who you used to have a relationship with whether it was online in real life or if it included your sex life. Your not with your girlfriend/boyfriend so they're classed as your ex.
by unknownnx July 26, 2023

1: Yo did you hear about Allie?
2:Yeah man. It’s fucked.
1:She’s the fucking ex collector.
2: Big mood.
2:Yeah man. It’s fucked.
1:She’s the fucking ex collector.
2: Big mood.
by Bugfacts May 24, 2018

The person who was part of the most significant or meaningful relationship that you used to be in, but aren't anymore. You can have more than one ex, but you can only have one significant ex.
The other day, I ran into that guy/girl I went out with for a little while and it was pretty akward. Glad it wasn't my significant ex at least!
by Shmooboo March 27, 2015

Break-Ups On Marriages, Or Divorces, In General
You Are Officially Ex-Married.
by Ioannis_the_word_maker October 8, 2022

He told you he wanted to marry you on the fourth date. He quit college and told you to relax when you said you were concerned about their future. You'll feel guilty thinking about guys who actually take their girlfriends out after he stops wanting to go places. Before you know it some girl says she's dating him. The ex boyfriend isn't serious about marriage and has tons of ex girlfriends that you never knew about. He'll disappear from your life.
by MCBL March 5, 2017

Someone who you've slept with with, but your not friends anymore just an ex-fuck. While still being on good terms.
Awkward situation:
Ex-shag: How are you?
You: I'm fine
Ex-shag: Wanna hang out watching movies?
You: Sure
Ex-shag: How are you?
You: I'm fine
Ex-shag: Wanna hang out watching movies?
You: Sure
by Casio38 April 11, 2010

An unremarkable individual who one dated for any duration, but whose name periodically escapes him or her, whose interests do not interest him or her, and whose wedding he or she will not be invited to and whose funeral he or she will not attend.
by Esther Mofet December 24, 2023
