I was at my fifty-eight year old mother-in-law's house doing some remodeling. I went to the bathroom and saw a pair of panties sticking out of the hamper. I grabbed them, sniffed them, and started pleasuring myself. Just then, she walked in and caught me. Neither of us said anything. Two weeks later, I was there again and when I took a break to use the bathroom, she said, "Don't go in the hamper," and smiled. When I returned, she kissed me and then we made love. We have been having an affair for three years now.