I feel more than me you need to ask yourself if you doing the correct thing. First you say you want to marry someone who you always liked and secondly you do not want to do injustice to your present wife. I feel you are not only going to do injustice to your wife but to your children as well and also to the other girl who probably is waiting for you that some day you will marry her. Shadi Sanjog mai jis ke sath thi ho jaye. Now dont try to disturb what has been written in your fate. You will not only create problems for yourself but for others as well.