Keep in mind that no matter what he shows you he is affected and has pain from the failed marriage as well. Its easier said than done but rest assured it is not easy for him he's just masking the pain with a new relationship. And you DONT HAVE TO BE SENSITIVE AND CARING! He has been careless with you. Allow yourself to feel the anger when it comes, dont act on anything but dont suppress it. Write letters, record your thoughts and get it out in a healthy way. Don't try to act like your not mad because you want a relationship with him. And consider why you would want a connection with someone who could be so insensitive to you. He has not been a good friend to you or he would have considered your feelings. Also I wanted to share my divorcecare email I got today:
Dr. Jim A. Talley says, “Another relationship is like Novocain for the heart. It is the easiest, quickest, slickest way to do away with the pain. But it’s sort of like having a broken foot. You can take a shot of Novocain in your foot after you break it, and you can still walk. You can keep right on walking. You can look around and say, ‘I’m fine. Really, I’m fine.’
"One day you look down, and you see these white bones sticking through the skin of your foot, and you realize that you’ve done a lot more damage to yourself with the Novocain than if you had put a cast around it, protected it, and put some structure to it.”
You need to protect your heart and you need structure so that your heart is supported and strong on its own. Getting involved in a new relationship will only damage a heart that is not fully healed.
To find structure and support for your heart, start with prayer, daily prayer. Then read God’s Word. It is also helpful to find a mature Christian friend who will pray with you and who can answer questions you may have about the Bible. Learn to strengthen your heart God’s way.
“For the eyes of the LORD range throughout the earth to strengthen those whose hearts are fully committed to him” (2 Chronicles 16:9).
Lord Jesus, I cannot do this alone. Help me realize it is not a relationship with another person that I need, but a relationship with You. I commit myself today to daily prayer and to learning more about You in Your Word. Lead me, Holy God. Amen.