Her bad moods not only involve me, but kids as well. What's up with that?
That's an easy one. Other Man is married.
You think you are on a roller coaster. Imagine being this other guy. One hour your wife is all hot for him. Then before they get out of the back seat she is pissed at him because he is married. Then on the way home she is texting I love yous and noone has ever done it to me like you do. Then if he's not responding to her emails and instant messages all night long when she is locked in her room. Its over. But its not because she is dragging your kids so she can keep an eye on him the next day. Your wife is probably jealous to death of his secretary. Drives by his house on the way to the grocery store. Checks her phone constantly.
realize, he cant always give her attention when she is available and desires it. that is a tough spot to be in.