When I get onto my hands and knees for the Cat Stretch, I feel him behind me, his hard cock bumping against my leg. He runs his hands up and down my s...des and hips as I round my back, and then arch and stretch. He caresses my ass and lets his fingers graze my pussy. They come away slippery and wet.I continue with my Cat Stretches as he runs his fingers along my aching slit. He gently rubs my clit as I arch and round my back. I moan, and push back against his hand.“Shhhh…” he says, as my body. We knew you and your sister would need some space and when we found this place we just knew it would be perfect."I gasped again. As I did I remembered the Dad's thoughtful look last night, "They know don't they?"Grandma smiled, "We had quite a talk about it last night before you came on. They suspect of course but I told them I'd forgotten to lock the door after checking the place over before they got here. I'm not in the habit of locking doors inside the house." She said giving me a wink."But. Now I had warn girly underwear many times before some times in public but as far as I know I have never been seen wearing it or no one has ever said anything any way.So I got out of bed and got down on my knees and pulled a box out from under my bed that had my girls stuff in and toys and o opened it and started looking through the clothes trying to decide what I might wear. I picked up a set of dark pink silk Knickers with matching bra and I put them on the bed. I then pulled out some white. Maybe even prevented it. Unfortunately I didn't understand my own reasons for what I was doing or feeling. There has never been a time in my life when emotions ran so high and really ruled me for such a long period of time.Day after day my rational brain was telling me that both Hubby and I were flirting with disaster. But my libido was running on so much adrenaline that it won-out over logic most of the time. After I had genuinely flirted with Jason in his bedroom that first time, I came back.