Don't shit where you eat.
Learned that personally too, not over the internet. It makes work really weird after you see a coworker and then you break it off but you have to keep working with said coworker. And your case will be double plus weird, since you've got this weird love triangle thing, and it will get ugly if he finds out.
I would say you're also at fault, and that the longer you keep at it, the more explosive it's liable to become. I'd tell her to dump the dude (if she's cheating then I assume she's having problems with him) or call it off. But, that's the rational choice. If the sex is just that good, then keep doing it and irrationally hope that things won't implode.
Learned that personally too, not over the internet. It makes work really weird after you see a coworker and then you break it off but you have to keep working with said coworker. And your case will be double plus weird, since you've got this weird love triangle thing, and it will get ugly if he finds out.
I would say you're also at fault, and that the longer you keep at it, the more explosive it's liable to become. I'd tell her to dump the dude (if she's cheating then I assume she's having problems with him) or call it off. But, that's the rational choice. If the sex is just that good, then keep doing it and irrationally hope that things won't implode.