Take some deep breaths and just keep on putting one foot in front of the other. Get a life, and find things to do without her. To most women, nothing is more attractive then a man whose got it together, and isn't being wimpy and begging. Show her what she will be loosing, by focusing your attention on your kiddo. Invite the wife along, but go to the zoo, go to the movies. Have you worked out a custody agreement yet? Maybe give her a taste of what it would be like not having her child around for a week at a time.