Over Christmas most of the family had been staying with Kat's grandmother, but she had opted for the guest room at the nearby house of her Uncle Brian, J.J.'s father. At first she had regretted it.
Before this she hadn't spent much time around J.J.'s stepmother, Lauren, who had married Brian a little over a year before. Initially Kat was confused by the way Lauren acted towards her -- aloof, almost hostile. A few times she'd caught Lauren looking at her in a funny way, and when their eyes met, Lauren just stared straight through her, then after a few seconds abruptly looked away.
But on her second day there, Kat had dropped her phone on the floor and bent over to pick it up. Glancing over her shoulder, she saw Lauren staring at her ass, and realized: Oh, she's into me. That was why she was acting so weird -- she was trying to hide it. It all suddenly seemed so obvious, and Kat couldn't believe she hadn't figured it out before.
On the one hand, this was very flattering. Lauren was an extremely attractive woman -- a tall redhead with an athletic build, and gorgeously crystalline blue-green eyes. She was also a full decade younger than Brian -- a trophy wife, no doubt about it.
On the other hand, Kat wasn't sure she liked Lauren all that much. They were on very different wavelengths. Kat found Lauren to be full of herself, stuck-up, and materialistic. And she wasn't always very nice to J.J.
On the third hand Kat was horny. It had been a few days, and she had gotten used to a pretty steady diet of pussy. She found herself staring at Lauren's body -- which Lauren liked to show off with tight clothes and short skirts -- and salivating a little bit.
Then again Lauren was her uncle's wife. Kat had been with several married women in the last few months, but this was on a whole different level. In the end, she decided to take a wait-and-see attitude; she wouldn't make any kind of move, but just let things happen. Still, at times she found herself flirting with Lauren, almost against her will. She kind of enjoyed playing this game without feeling particularly invested in the outcome.
On that particular morning, J.J. and her father had risen early to join the rest of the family for a long hike. Kat, who liked to sleep in whenever possible, had passed on the hike, as had Lauren, who was not the outdoorsy type.
It was late in the morning before Kat stirred, and even then she didn't open her eyes, just rolled over onto her side. She had been having a sexy dream and was in no hurry to wake up.
Suddenly, though, she got a strange feeling, like she was being watched. She squinted her eyes and glanced to one side -- and sure enough, there was Lauren, leaning in the doorway. In response, Kat rolled over onto her other side, but this time made sure her naked ass was sticking out from under the covers (she was sleeping in the nude, as usual). Then she just lay quietly, breathing, waiting.
Finally, a couple minutes later, Lauren crept over to the bed and sat down. Kat felt a warm hand run across her butt. She sighed quietly, as if still asleep. That simple touch melted all her resistance -- her nipples got hard, her pussy got wet, and she was ready to go. The hell with everything else.
Lauren lifted the blanket still covering most of Kat's body and slipped underneath. She spooned Kat from behind, kissing her on the neck. She reached one hand over to cup Kat's breasts, pinched each nipple, then traced the hand down Kat's belly and abdomen, through her pubic hair, and between her legs. Feeling one of Lauren's fingers slide between her pussy lips and push inside, Kat decided there was no point being coy anymore. She rolled over and kissed Lauren hard on the mouth.
At this point Lauren was still fully dressed while Kat was naked, which hardly seemed fair. So Kat pulled Lauren's T-shirt up and off, revealing a pair of smallish, high and tight breasts with thick brown nipples. Kat sucked them hungrily as Lauren continued to finger-fuck her. She was fully awake now, and then some; she felt aggressive, almost feral. She bit down forcefully on Lauren's nipples, prompting a moan that was half pleasure, half pain.
