I Finally Got Ahold To My Boyfriends Cellphone And Read His Text Messages. I Knew It, He Is Cheating. I Found Two Different Girls Numbers And Messages. Also Messages To And From His Babies Mommas. Should I Confront Him Or Cheat Back?

I wouldn't do either I would just leave and not look back... Confronting them can just lead to arguing which you have proof so there is nothing he could do to sway you.... And cheating back well that to me personally is wrong and I couldn't do it plus it could ruin your reputation

You should confront him, but you should call those numbers first  just to be sure and see of they really are with your boyfriend

Confront him keep asking him questions and what he tells you doesn't make any sense..ask him again if his stories changed then yeah, he's cheating.. But first don't just assume that he is cheating, look at it this way that is his babies momma. He probably need to KIT with her just to see his kids..
bout those girls numbers and messages, you need to confront him and let him know what's bothering you and ask him lots of lots of questions..
I do that to my ex too.. I asked her questions after the other then the next day I asked her again and most of the time they forget and changed the stories. That's is how I know that she's lying, they can't stick to their stories..

Cheat back.

Heck yes! That's so funny I read this cause I just caught my man cheat in on me with two girls one be in my friend... Pretty sweet huh? You but you def.l need to confront him cause if not he will always think you will let it go and he will walk all over you.

Confront him. You'll have power over him because he will know you know and can't wriggle out of it. Cheating will not solve anything. If not make things worse and give you a worse reputation and him to have a reason to carry on cheating.