[quote]Don't buy anything together until, at least , the divorce is filed , it's optimal to what until it's finalized . If you are bound & determined to buy , make sure it's in your name alone and that you can afford the payments yourself for your own protection . [/quote]

And none of the down payment can come from him. Because if his wife can prove that he provided any part of the down payment, then she has a claim on the house, even if it is just in your name.

Really, wait until he's divorced before buying any assets with him.