Quit Claim after bk in order to be part owner of new property

My girlfriend's sister is about to file bk. Her boyfriend is buying a house and he plans to put her on the deed but not the loan due to her bk. Is that possible to do? Will the bank be okay with her being on the deed with her bk even though she is not on the mortgage anywhere. She is actually planning on signing a lease agreement but she thinks she can be half owner of the new home even though she is not paying on the house at all. I agree that if its possible it is very stupid of her boyfriend to put her on the deed as co-owner. I however suspect that the mortgage bank will have issue with this arrangement and in turn foreclose on the property. Is this arrangement legally possible?