Definitions by OSUgirls

Frex 

An Ex who you're still friends with (friend + ex)

You do NOT hookup, that's a Sexfrex

"We're not getting back together- he's just my frex"

"I got really grunk last night and my frex turned into my sexfrex... whoops"

Frex by OSUgirls March 2, 2014

Sexfrex 

An Ex that you're still friends with, and occasionally hook up with. Different from a fuck buddy because you have history and also enjoy their non-sexual company.

"We're not getting back together, I just like having him around... especially at night. He's just a sexfrex I swear!"

Sexfrex by OSUgirls March 2, 2014