What do you think?

Give him some time..When someone dies that way it can be very traumatic, especially if they were close. When he does talk about her, tell him that you know that it hurts to lose someone you have been intimate with and that if he needs to talk it ou then you are there to listen. He needs more than 2 weeks to get over her death. He is different than you in that fact. His grieving process is different. Have some compion and understanding. If he's still dwelling a a month, then you can gently let him know that he needs to let her go and find peace that she's in a better place now.