Kristen and Dave and I had an understanding. They were in love and together forever, but they liked to have some fun sometimes with more than just themselves.
We were hanging out together, as usual (we were all good friends), when Kristen snuggled up a bit closer to me on the couch and rested her head on my chest, her hand on my thigh. I smiled over at Dave and stroked her hair slowly, the way she liked, and she sighed and nestled in a bit more. Her hand lifted my skirt and moved up between my thighs, stopping just short of my panties, and Dave shifted a bit in his seat. His eyes were focussed on my barely parted legs, so I spread them wide for him and he groaned, hand dropping to the front of his pants of he gazed at my blue cotton panties.
Kristen looked over at him for a moment and a mischievous look passed over her face. She sat up a bit straighter beside me, hand still high up between my legs, and looking once more at Dave to be sure she had his attention, she turned to me and kissed my lips. It was a soft, almost chaste kiss that was over as soon as it was begun, but I would have none of that. I took her head in my hands and brought her face back to me, licking her lips and staring in her eyes before slipping my tongue into her mouth and kissing her deeply.
She sighed against my lips and soon we were in a tangle of tongues, each kissing the other more deeply. Her hand finished its journey and pressed against my aching wet cunt, one finger making its way into my panties and sliding up and down my drenched slit. I turned slightly towards her, spreading my legs as far as they would go and cupping her tit in my hand, pinching and pulling on the nipple the way she liked, kissing her until neither of us could breathe. We parted, panting heavily, and looked over at Dave. He had his cock out and was stroking it slowly, and he motioned for us to continue.