often when women cheat its for different reasons then with guys. generally its due to emotional issues. find out why she cheated. did she feel unattractive, unloved, unwanted, unsexy, what? dont ask if you dont really want to know and are willing to fix things. once you know the problem, you can work on it. dont just say "you feel unsexy? i think ur sexy, here ill fix things." then ignore her. that wont work and things will only get worse.
thing is, without this issue being resolved.... odds are against you.
Tough call bud. I was with my first one 10 years before I busted her.... And it wasn't sexting.... Just plain old sex. Got kids? If yes then you owe it to them to try anyway. If not then send her packing. There's no excuse, and plenty of good ones out there that don't play that crap. Ask yourself.... What we she have done if she busted you sexting with an ex????? Were they just talking dirty or sending pics? Makes a difference in my book. But either way I would look for a way out. Sorry, divorce REALLY sux. Good luck.