i understand
alec, cause i feel the same way too.
edison & charlene, despite their strong chemistry,
just doesn't strike me as a scandal type,
the kind where edison just use the girl for sex,
absolutely disregarding any respect for her.

furthermore, there have been no photo released so,
and knowing the guy who revealed all the photos,
if there was one of charlene,
it would have DEFINITELY been revealed because then it would escalate the problem as it's both twins involved.
but no, no photos, hence it's practically definite edison have much for respect for charlene if anything had happened between them privately.
what i feel is that charlene knows of the sex between edison and her own twin,
and i think that's what makes her back off because charlene isn't the kind of person who would step in.
funny though, i remember when i was writing my fanfic years ago,
i had put gillian as the one who slept around while in the further chapters to be as charlene not wanting to be with edison because of her own friend with him before in a sex manner,
and never did i expect that to turn out to be a fact at the start of this year.

that being said, with charlene kind of girl,
it's no surprise that she would ditch edison when she knew of him treating gillian as just another sex toy.

though i think if charlene had just forgiven him and perhaps been with him,
she could have changed the playboy edison,
but it'll be her loss that way and against her own love for her twin.