I was just chillin, looking forward to having the house to myself for the weekend because my Stepmom was getting ready to go out with her new boyfriend for the weekend. But then I heard her crying, so I went to see what was going on. She was super bummed because this is the first guy she has dated since my dad passed, and he broke up with her right before the trip. I thought the best way to cheer her up would be to offer to be her date instead, and although she balked at the idea of it being a date, she accepted my offer to go with her anyway. I couldn't help but noticing the pile of swimsuits next to her, and imagining seeing her in them, so I suggested she try them on for me. She reluctantly agreed, telling me not to peek. And that is the first thing i did. It was such a turn-on watching her changing right there in front of me. Even more a turn-on since i had to be sneaky about it! As she was putting her dress back on, she asked if i would help her to finish packing. I agreed and while i was putting her suits into the case, I thought 'what would happen if i only left the thong in there? She would have to go topless then, right?' Without hesitation, I stuffed the suits and tops in the closet, only leaving my Stepmom with the sexy black thong to wear at the hot spring!