I am so sorry that you guys have gotten this news. This would be a tough lump to take for anyone after just losing someone like he has. Try to encourage him to go see her as often as possible & enjoy the time with her that is left (not trying to be negative, just realistic), of course you will have to be very tactful in doing this & no doubt it will be hard on him. Try to keep him busy & get him to do some things to keep his mind off of things. There may be some meds that can help, but I think just trying to not let him slip into a funk is the biggest thing, but that may be unavoidable. We are all thinking of you both & will try to help you out as best we can.
"The struggles make you stronger, and the changes make you wise, and happiness has it's own way of taking it's sweet time.
Gary Allan- From "Life Ain't Always Beutiful"