When reading your posting, I was shaking my head because you are living what I went through 21 years ago right down to needing space and time to think, working on the marriage, and finding a receipt, etc.
Your h never left replay. He will be in replay for quite some time and this business about needing time and space to think is a bunch of BS. It's his way of smoothing things over and while doing so, he's trying to figure out a way to be w/the OW. Many of them say this stuff and at first, we truly believe that they need to the space to actually think about our relationship. As for the words "working on the relationship/marriage", when they have fallen down into the rabbit hole, they may attempt to work on it, but truly, they don't. I am sure many of us have heard those words and thought that they would make an attempt to work on the marriage.
As for the receipt in the car, he may have forgotten to take the receipt out of the car or he may have left it there hoping you would find it. Whatever the reason, now you are aware of where his mind is at and now you need to drop the rope completely. Treat him as a roommate and do not attempt to get him to see the error of his ways. The more you attempt this, the more he's going to pull away.
Since he's thinking of getting a place of his own, be sure you protect yourself and your bank accounts. He may talk for quite some time about getting a place or he could very well go out and find a place in the next couple of weeks. It will most likely depend upon how much pressure you put or him, as well as how much pressure the ow applies as well. I am sorry that he's still in the rabbit hole, but you've got to step back, no more discussions about the relationship and just drop the rope.
Try to remember that actions speak louder than words. Keep the focus on you!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
