"Stopping at the video store" seems to be your wife's alibi for most likely making phone calls to OM from the video store parking lot.
During my wife's affair, she would often "forget" a couple of grocery items, or something from the drugstore, and offer to go back out after dinner to get them. She has ALWAYS, absolutely HATED to go back out, and in fact, never would (unless it was something like medicine for the kids or something urgent). She would then disappear for about 45 minutes, and come home with the item(s) that must have taken all of five minutes to purchase, and five minutes drive back to our house.
Well-handled, all the way around, btw. I do think you should specifically stop asking her if she wants a lunch, as that would be a real "180" for you. Otherwise, just keep it up.
