Hey Mrs. A! Here's my two cents. HE asked YOU out so the onus is on him to determine what you are going to do, so I don't think you need to figure out what you can do on your date. Since he hasn't followed up since asking you out I'd either send him an email/text (or call if you like) tomorrow morning asking him what time he is coming by to pick you up to go out. If he cancels then, unless it's a damn good reason, he's lost his Mrs. A. privilges in going out for awhile.
If he makes good on the date, just enjoy the time, don't rehash the past or do anything resembling R talk. Think of this as building a new relationship with him and enjoy the newness. I hope you have a great day tomorrow. By the way thanks for "friending" me in the alt.