I am having a hard time not resenting my child.
Why do you resent your child?
He becomes so cranky when his mom and dad have been gone from the house for a while.
I'm sorry your kid is giving you trouble, and it's normal to feel very frustrated with him. But in the end you still need to love, cherish, and keep him safe since you are his parent. You can't let this resentment get the best of you.
He isn't getting it his way, but in the end I'm a cool and nice parent. And he's getting my way in the end. He's well behaved when we want him to be.
Well it sounds like these are rare occurrences for the most part. If you child becomes upset when his parents leave than maybe he just feels a little afraid without you guys being there. Maybe getting him into some sort of sport or club would expand his perspective a little bit.