Sorry to hear of your situation. First try to talk to your husband and find out the cause of the affair. Listen to him and try your best to work on the problems. If the marriage cannot be salvaged and you file for a divorce, it does not mean you have to provide for your 2 children alone. You can apply for maintenance for both you and your children. You will be expected to find a job though as you are healthy so maintenance from him for you will not be high. But for your children, your husband will be reasonably expected to maintain their present lifestyle. As their mother, and if you are perfectly healthy, you will have custody of the children with access to your husband. Regarding housing, talk to your husband then and see if your husband is willing to transfer this house to you if you do not have the money to buy over his share. If you reach the stage of having to apply for a divorce, please seek advice from a divorce lawyer. And remember, you will not be alone. Hope the above helps.