Since my wife wants a divorce tand he house mortgage is in her name, do I have to pay half of the monthly payments if I move out?

Whether you have to pay a portion of any mortgage on the house that is in the name of your wife but not you depends upon what you and she ultimately agree upon and if unable to agree upon what the family law judge hearing your case ultimately decides. Under the laws of most states, the court divides the assets of the parties according to the state law in effect. For you to make any mortgage payments on the house that you are writing about presumes that you will be ordered to pay some sort of alimony.

You may not be ordered to pay any alimony by the court concerning your dissolution.