I think you should stay and try to find common ground together. What he may have meant by it not being a quick fix is with the economy the way that it is it could take some time to sell the house and he may not get what he wanted for the house. What you could suggest is for him to move in with you and you rent his place out that way you have steady income always coming in and then him and his son move to your home. You have to tell him that you will not live your married life apart and that you need to be a family unit TOGETHER. Since you have four bedrooms you have the room for everyone and have privacy and maybe make the fourth room an office or entertainment roomor guest. This really isn't a valid reason to just give up on the marriage when you can compromise on a fix. Talk to him about renting his place out and moving in with you and also you could find another home and rent both of yours out with the economy that is a sure fire way to always have an income coming in.