Then follow Wonka's advice. Tell him you picked up the receipt because you needed a piece of paper. Firm, composed. Let him explain.
I'm sure he IS feeling a ton of guilt, and yes he honestly is attracted to you. I'm sure he is being torn apart. Just like you are right now.
The reason why -- MLC. It sux. Big time. Why did you pick up that receipt? I don't know but will tell you that many strange things have happened to open LBS's eyes, including my own, to what our spouses are doing. I read an email from my H to RT that mysteriously arrived in my email inbox. Friends have had things happen like you just did. Now you will know the truth, Amba.
Hang in there. Read Wonka's post again. You CAN do this.
Linda
Me 65, Ex 64 M 38 y 2 adult S, 4 G-Kids MLC 11/07 BD 12/09 D 3/14 Dating nice guy 7/14 Engaged to nice guy 12/17