ex-flex 

A former lover who then became a friend, but who is presently neither.

I don't want to go to the party if my ex-flex is going to be there.

ex-flex by Kaichester August 29, 2009

Flex on my Ex 

To experience a better life after a relationship has taken its time on you.

To be better off without your ex significant other

Basically rubbing it in your ex's face that you're "the shit" and they're not.

To stunt or show off on your ex-relationship with a significant person, that you're doing better.

Showing your ex that "there are more fish in the sea".

Just won the lottery, watch me flex on my ex..

Flex on my Ex by TEAM RILLA January 20, 2018

flex on your ex 

Upgrade from the previous relationship. Meaning the new significant other must be more attractive, successful, wealthier, smarter and better in bed.

You are about to flex on your ex with your new bae.

flex on your ex by Dutchess of Chicago August 21, 2017

Flex on ya ex 

Putting your dick on someone's eye

Daneuh; "yo sof did ya flex on ya ex this weekend"
Sofeuh; "nah man I ain't got a dick to flex in ma ex"

Flex on ya ex by Daneuhsbae January 27, 2017

flexing on my ex 

Showing your ex that you're better off without them

We broke up last week but i aoready got some new hoes. I'm flexing on my ex.

flexing on my ex by Littyamdt April 17, 2017

flexin on my ex 

having sex with your ex lover.

Flexin on my ex, if you know what i mean.

flex time to hav sex

flexin on my ex by Diazbabey November 10, 2010

ExFlex 

Verb: To dig up an Ex's pic (or photograb a random photo) to flex unnecessarily when one has run out of Gunpla to flex, if one had Gunpla to flex to begin with. This happens when one, a wife-leecher feels inadequate against a real Gunpla/toy collector who has more than enough money to have a huge collection.

"My Ex Girlfriend guy's just wanna share"

"Why are you doing an ExFlex? aren't you worried the wife you leeching from might get jealous?"

"No, it's okay hehe past is past and I'm married"

"If it's in the past, then why dig it up and share with a Gunpla group?"

ExFlex by TheLingeringSaint February 4, 2022