Former male lover, present male friend.
My boyflex and I are going to get some drinks...
One's favorite former lover, present friend.
My best flex wants to meet you. Are you cool with that?
A former lover, present friend, who one occasionally has sex with.
If it weren't for my sex-flex, I wouldn't be getting laid at all.
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.
Former female lover, present female friend.
My girlflex and I are going to see a movie...
Former lover, present friend.
My flex is helping me move this weekend.