I agree that the woman often gets the most blame on these situations; it's something I notice because it annoys me intensely. However, I haven't felt that Lauren has received more than her fair share of dislike on this forum. There's only been one instance when I felt obliged to point out that Brad was the more guilty of the two because it was him who cheated.
Lauren and Brad both seem to be disliked here fairly evenly. In fact, if anything, I think Brad has come in for the worst of the flak because he failed to rescue Terese from the fire.
I've also made the point that neither is Terese responsible for Brad cheating, no matter how much she "pushed him away". The only person to blame for cheating is the person who made the decision to do so: Brad.