It happened a couple of weeks after I discovered that our new babysitter was none other than the girl I'd been flirting and fantasizing with online. After that night I had told Kat that we could not have a physical relationship, that I couldn't betray my wife that way. I explained that if it meant the end of our online flirting as well I'd understand. Luckily for me she had sad that she completely understood and that she didn't want to stop our fantasizing. I should have realized then just what that little twinkle in her eye had meant.
The weeks following showed me just how hard it would be to keep to my decision. I hadn't been so sexually frustrated since I was a hormone addled teenager. Every time Kat came over to babysit I left the house with my wife on my arm and a raging hard-on threatening to tear through my pants.
Kat seemed to go out of her way to tease me, wearing clothes that she knew would get my motor running. They weren't always overly revealing but she knew all of my fantasies and fetishes. Sometimes she would just put her long hair up in pigtails or braids that I ached to pull on and whenever she caught my eye she'd pull on one, idly scratch her breast through her tight shirts, or softly caress her stomach where I knew her panther tattoo was crouching. She knew exactly how obsessed I was with her and she loved driving me crazy. I always saw her checking for the results of her teasing as I left the house.
My wife wasn't any help either. Not only did it seem like she was wanting to go out much more often than usual, requiring us to ask Kat to come watch the kids, but she started commenting on how sexy Kat looked in that skirt, or wondered aloud who might be getting to enjoy that tight little body on nights when she wasn't sitting for us. She wasn't stupid, she could tell that Kat turned me on. She would get me so fucking hard thinking about Kat and then I'd take her, pounding her to one screaming orgasm after another. A couple times she even taunted me while I was fucking her. "You like fucking that little pussy, Mr. Stone?" she'd ask, imitating Kat's voice.
I knew that my wife didn't know what had happened between Kat and me, and I was pretty sure she'd be furious if she found out, but I swear sometimes I saw the same lust in her eyes that filled mine when I saw our sexy little babysitter. My wife had never had an experience with another woman, and I was the only man she'd ever been with. But those looks always got me imagining Kat on her hands and knees, licking my wife's dripping pussy while I rammed her from behind.
I felt guilty for my obsession, for my fantasies, for my lustful glances as Kat would bend over in her tight jeans, but I couldn't help it. Kat was mine! and I wanted to claim her over and over and over again.
It was a Friday night when it happened and my wife and I had planned our weekly dinner date. Kat was already there when I got home, but for some reason my wife hadn't changed her clothes. "Everything ok?" I asked her, tearing my eyes away from the flannel shirt Kat had worn for me. There was no doubt she'd done it to tease me. Plaid flannel shirts with plenty of cleavage showing are among my biggest turn-ons.
"I just don't really feel like going out," my wife answered. She looked pretty tired, the way she normally looked when the kids had been particularly out of control during the day. "Can we just stay home and watch a movie?"
The kids went wild at this, jumping up and down and screaming out names of movies they wanted to watch. I smiled and responded, "Sure sweetie, I'll just run Kat home real quick and then we can start it."
"Can Kat stay and watch the movie Mommy?" The question came from my daughter who was looking up at my wife with her best pleading little kid look. My wife glanced at me before looking down at my daughter.
"Sure princess, if she wants to stay she can," she said with a smile. She watched the kids jumping around in excitement, but my eyes were on Kat who had been listening. When she saw me looking she gave me a wicked little grin and subtly undid another button on her shirt, her breasts pushing the thin flannel fabric farther apart. Once I was able to tear my eyes away from the mounds of flesh staring me in the face I looked over the rest of her outfit. Tight jeans and two braided pigtails. She looked ready for the rodeo and of course all I could think about was her taking a ride on my throbbing member.
I groaned internally as my cock immediately swelled to full erection. I walked over to the smaller of the two couches and sat, pulling one of the throw pillows into my lap to hide the bulge that was visibly extending down my right leg. After confirming that Kat was staying and deliberating as the kids decided on a movie, my wife came over to sit next to me. She pulled her legs under her and snuggled into my side, watching Kat as she helped the kids put the movie in and get it started.
Kat had to bend over to put in the DVD and the sight of her ass in those jeans just about made me cream the inside of my pants. Realizing I had stopped breathing and was staring I tried to discreetly look away and start breathing without letting my wife know what had happened. I was slowly letting my breath out when I felt my wife suddenly exhale a full lungful of air next to me. It was like she had been holding her breath too, but when I looked at her she was looking at the fireplace.
Once the movie had started, Kat turned the lights off and went over to sit on the bigger couch. The kids climbed up next to her and snuggled in close. Apart from being my personal little torture, she really was a great sitter and my kids loved her.
About 10 minutes into the movie Kat went to make popcorn. On her way back she stopped by her backpack next to the kitchen door and put something inside. I couldn't see what it was but for some reason she was grinning at me again like she'd done something naughty. Without a word she went back over to the couch and sat down with the bowl of popcorn in her lap. Something had changed, but I couldn't tell what it was until a couple of minutes later when I happened to catch her sliding a finger along her shirt where it covered her breast. After her finger passed and continued down to the popcorn I saw the small outline of her nipple pressing out through the flannel. "Fuck me," I thought to myself. It was her bra that she had been putting into her backpack and her now erect nipples were clearly visible to my hungry eyes.
It didn't take long for the kids to get sleepy, and when they get tired they only want Mommy. My daughter was the first to come over and crawl into her lap, and soon my son was on his way. Knowing we didn't have enough room she told Kat to switch her couches and carried the kids over to the larger couch where they could all snuggle together.
Kat's eyes locked on mine as she walked over toward me and her tongue flashed across her lips briefly. I couldn't stop the growl that came from me as I thought of that tongue bathing my shaft as I drove her home that night. Luckily no one but her seemed to hear it, unluckily she did hear it and her face split into a wide grin. She sat to my right where my wife had been and leaned back pretending to watch the movie.
Before long I felt her small hand moving against my leg and then it was sliding up the side of my thigh and under the pillow that was still in my lap. Seconds later her fingers were running across the thick bulge, caressing my shaft through my slacks. I glared at her and shook my head slightly telling her silently to knock it off, that we couldn't, but she didn't move her hand away. She continued to fondle me as she stared at the screen, her breath matching mine as I began to suck in deeper lungfuls of air.
