I made some more long, deep thrusts, and the expression on Kimberly's face went from laughing to serious; her eyes focusing somewhere far away as she concentrated on the wave of pleasure that was building up inside her. I began slapping my belly down hard on hers, pushing up deep into her. Braced above her on straight arms, I watched her magical tits jiggling violently with each thrust. Milk was still trickling from the one I'd been sucking on, the droplets appearing on the gyrating nipple and then disappearing as they flowed down one side or another of the quaking breast.

"Y– ye– yes," Kimberly stammered, the word squeezed out of her in the fast rhythm of my thrusts. "F– fuck me, L– L– Lyle… Fuck m– me." The hands that had been at my waist released me and now drifted aimlessly, her fingers opening and closing on air. Then she shut her eyes tight and turned her head to the side. "Gonna…" Her voice pinched off, and for a long moment she made no sound, not even breathing, her hands in tight fists and her body rigid as I continued to fuck into her. And for a long, frozen moment, as the rest of her body was stiff and unmoving, milk began to spray upward from both her nipples. The fine little jets spurted out, some of them shooting up and wetting my chest and others squirting out in long arcs that went in all directions. Then with an explosive burst Kim's voice was released again, and she shouted "<I>Oh!</I>" in a bellowing grunt as her body writhed and twitched underneath me, milk still jetting out of her nipples.

I felt my own orgasm coming, and with my last voluntary act before that explosion, I cupped a hand loosely over her tit so I could feel the warm spray against my palm. Then it was my turn to let out a bellowing grunt, as the cum spewed out of me and my body went into wrenching contractions that drove my cock to its furthest limit up into Kimberly's cunt.

I collapsed onto Kim's body, dropping my weight on her as I gasped raggedly for breath. I could feel the wetness of her milk between our bodies, echoing the wetness of my cum and her cunt juices that surrounded my wilting cock and trickled out of her.

A few minutes later we were both sitting up on the quilt, not facing each other. "You look glum," Kimberly said. "Feeling bad about cheating on Sheila?"

"Yeah, kind of," I admitted.