This happened to me last year when I had a one night stand with a guy. We met in a bar downtown, and just the usual talking, laughing, getting to know each other a little bit and we got along so we decided to hit it up. He suggested to do it in his flat as its not that far and so we go down to business and enjoyed each other. The morning I woke up I sort of found lots like totally a lot of female garments its craazzzyyy lol. He told me its his weird fetish, arousal to female garments touching his skin.