Re: Is "sexting" cheating?
In my experience (texting and sexting almost ruined my marriage), I would have to say yes. I'm not an expert, but the generalization is that a woman will only sext after an emotional attachment is established with the other man. It is this emotional attachment that is actually what is destroying the relationship. The spouse/SO is giving all her "best" emotions away to the OM, and NOT giving them to you. What's left for the husband/boyfriend are the "crumbs" in the relationship, and usually they already fell on the ground and got dirty, so you don't really want them.
Not to mention, what "normal" male wants to intercept texts that his spouse/SO sent to the other man about how she so desperately wants to F*ck him and give him the best BJ in the world (especially when now she DOESN'T want to do that to you, or didn't for quite a long time). Nothing kills a mans ego more than reading that kind of trash coming from his wife and going to another man. For me, that was my "turning point", when I "forced" a separation with my wife.
Not to mention all the behaviors that accompany a cheating spouse, of which I could go on forever, but this site has great reading on that subject (the "FOG", etc.)