I have known about my husbands affair for nearly a month now. I have forgiven him and he is trying very hard to prove to me that he is sorry and regrets what he did. There is zero contact with the OW (as far as I know). He tells me when ever I want to look in his email I can, he no longer takes his cell phone anywhere, if he goes somewhere I go with him/or one of our children go. We are spending tons of time together and he has answered any question I have thrown at him. I really do believe he wants to be with me.
That is great. It does sound like your husband sincerely regrets his actions and is willing to do what it takes to repair the marriage. I think you have a good basis for moving forward together.
My problem lies with the OW. [snip] She was a good listener, he felt so comfortable with her like he had known her forever, she made him feel so good.
Maybe this is an area you can focus on as you work to rebuild your marriage and meet each others ENs. As you read the material on this site, you will notice that those are important ENs. Look for the sections talking about ENs of conversation and admiration.
I feel like I am up against someone who gave him everything he needed. I am doing back flips to out do her. (that sounds crazy!) Sometimes I think I over do it and end up annoying him then I feel like a failure. I am almost afraid to see what she looks like in fear she will be really attractive, then I will feel like she has something else over me.
She couldn't possibly have given him everything he needed. She was not around enough to do that. She was only fulfilling a few needs (such as the ones you yourself noted above). He never experienced the realities of day-to-day life with her. They just lived in fantasyland.
This is not a competition! Stop doing back flips. Did you read about Plan A yet? You should be doing Plan A now. Plan A is not about doing back flips to please a WS. Plan A is about you. Taking a hard look at yourself, and improving you, learning to be a stronger and more confident you.
In what ways are you trying to outdo her?
If OW is all that attractive, why does she need to go after someone elses husband? Visualize her as the ugly person she is.