Sometimes men feel like an outsider after children are born. It's because the wife has to give the children so much of her attention. He cant help feeling a little resentful or jealous. If you want him to open up. Give him some attention. Tell him you appreciate him often. Kiss him and love on him too. Men also shut down when they are not getting enough sex. Tell him when you feel sexual. Tell him you want him, and are attracted to him. This will help him to feel close to you again, and he will begin to share himself with you again. Treat him the way you want to be treated. Sending love and light.