Stop being scared and stop the negative thoughts. Remember no expectations then you free yourself from the worry!!!
I do agree that maybe if an R talk does come up try your best not to get emotional and do not tell him how he feels, you know what do a 180 and don't talk about him at all, talk about YOU and how this is affecting you, and how you feel about it!!! Open his eyes to the fact that there are two of you going through this. Don't get mushy or anything just matter of fact.
Hopefully none of this will even have to come up as you will have a great day out at the outlets, go see a movie and be able to go to your friends house and gush about what a great day you had.