A couple of years ago I was staying with my cousin and his girlfriend (now wife) for a week. She's about 5'5', size d tits, about a size 7, blond, and one beautiful big butt. She's not really pretty just cute, but I've thought about her a lot during my 'private moments'. Well this one day she had gone shopping with her friends and my cousin got called into work. That left me in their house alone.
I was just watching tv when I realised I was alone with a cute girls panties in the other room. So I went into their bedroom and started looking through the drawers till I found her underwear. They were silk briefs. Different colors. Black, red, etc. I took the red ones out and examined them. I turned them inside out and sniffed the crotch. I could smell her sweetness which made me get hard.
I took them into the living room with me, stripped, sat on the couch and with them on my face started jacking thinking about her. When I was about to cum I grabbed her panties off my face and came inside them. Of course I wasn't really thinking at the moment. When I came down off my high I realised what I had done and didn't know what to do so I just put them back and hoped like hell she didn't notice.
A few hours later she returned and went to take a shower. She got out as my cousin got back. She came into the living room as he was going to the bathroom to take a shower himself. She squatted down to get something and when she did the sweat pants she had on lowered a little bit and her t shirt rose revealing her panties. THE panties I had cum inside a few hours earlier.
She walked over to a chair, sat down, looked over at me smiled and winked. She told me that she knew what I had done and that she didn't mind.