in my opinion, it was wrong in many different levels. Obviously cause of the ones that everyone's mentioned, but no one mentioned her ex husband, and the kids she had with her ex.
I have strong family values. the way I see it is, (and don't get me wrong, there are many exeptions), but, if you marry someone, and you are willing to have not 1, not 2, but 3 children with that person, you should have respect for your kids, and fix whatever's wrong with your marriage.
imagine how her son must have felt knowing that some kid, 1 year older than him, had sex with his mom? What must have been going through his mind when he found out that info?
Regardless of how you feel about that other person, she had priorities. At the time, those priorities should have been, respecting the fact that the kid was still in gradeschool, and regardless of whether or not he said he loved her, to wait until he's old enough to understand what he's getting himself into.. And the fact that she has a family of her own to love and respect.. It's hard enough on young children to have to go through seeing their parents split up, but having them split up for such a reason is just wrong.