Recovering emotionally you. You have to try to calm and controlled behavior to come back before you can try to win her back. Women do not like clingy, desperate men! Go to the gym or jogging busy, useful and you do something for yourself
Talk to other women. This helps on several levels. Your ex-girlfriend will not come to realize that you are already going out with a new wife and is trying to win you back. But be careful that you do not find too much pure hang, because otherwise they might think you're happy with the new wife and try it, even something new.
Text The Romance Back
Behave as if everything would be fine. She will not want to go back, if you're running around just depressed. Show her that you're okay, you can laugh and have fun. But if you show a little sad, you'll like this. She sees that it is nigh thee, what has happened and will miss you even more.
See from dazzling! Give yourself the effort with your appearance. Go to the hairdresser, buy some new clothes and care for you. Then they can not resist anymore.
Building self-confidence. Take a friend as a role model who always acts with confidence and try to take his own way of speaking and so on. In the beginning you play it perhaps only, but after a while you will feel really confident.