Wearing his Daughter’s Panties

I was having an affair with my best friend’s dad. I took her panties one day and brought them home. When he came over that’s all I was wearing. I didn’t tell him they were hers, but I made sure he fucked me while I was wearing them. After he came inside me his cum leaked out and soaked her panties. When I returned them then next day I only had the nerves to put them in her clothes hamper to be washed. She has always been my fucked up fantasy for him but I know it will never happen.