The relationship between my brother-in-law Reuben and I started off innocently enough. He had married my older sister Allison about two years after they graduated college, having been together since sophomore year. I got married another two years after that to Glen. As is typically the case, we spent most holidays together with our family, usually going to my parents' house, since it was large enough to comfortably contain a dozen or so people.
Last Christmas, we all gathered together as a family to make up for missing out on it the year prior. A few days before Christmas, Glen was working on his laptop in the den when I entered to pick up a bunch of the toys my three kids had left strewn about. Normally, I'd make them do this, but I was worried that they'd be a hazard, especially to my parents. I was wearing a plain green tank top and a pair of jeans that fit snugly, so when I got down on my hands and knees to clean up everything, they really squeezed against my ass.
"That's a view I don't mind seeing," Glen stated. I could feel him ogling my backside, watching me intently as I was in this compromising position.
I'd been aware of his attraction to me for a while, because Allison once let it slip while drunk that he'd confessed this fact to her after my wedding. Reuben and spent our first night as husband and wife in this house, to avoid ballooning our wedding budget more than we already had. Allison and Glen were staying in the room down the hall and around the corner from us, but there was a shared wall between them that both beds happened to be against.
Apparently, they heard us having sex, and Glen got so turned on that he started fucking her while she was still asleep. She went to bed in just her nightie, so he was able to enter her from behind as she was lying on her side. When she finally did wake up, she felt him deep inside her pussy, his thighs grinding into her ass. In a daze from the abrupt manner which she awoke, combined with the intoxication of how passionately he was fucking her, she wasn't certain she'd heard him right when he grunted into her ear, "I'm gonna pump you full of my cum, Jessie."
The next morning, after she'd had time to replay what happened the previous night over again in her head, she was convinced he'd said my name. So she asked him about it, and he told her that he'd gotten caught up in the fantasy of him fucking me on my wedding night instead of Reuben. They talked about it for a bit, during which time he revealed that he fantasized about me a lot. She also told me that the best sex they ever had was when they would roleplay, with her pretending to be me.
I was a little weirded out by this initially, but as she seemed to be fine with it, I never brought it up again. However, it definitely made me look at Glen differently. By this point, the fire in my marriage to Reuben had long since fizzled out, and I was more than happy to indulge my brother-in-law when he made suggestive comments, flirting back and enjoying the attention.
"I'm sure you've seen plenty of women down on all fours in front of you," I said playfully.
"True," he replied, "but they didn't have grape jelly stains on their shirts. That's the secret to really grabbing a guy's eye."
I sighed and said, "I don't think I own any clothes that haven't been covered in some sort of mess."
"I'll bet. And some being more fun to get than others," Glen retorted.
Although our exchange ended there, later that night, I heard my sister and him going at it. We were in the same rooms as my wedding night, except the arrangements had been swapped, so they had the bigger one. I couldn't help but wonder if Allison was pretending to be me as her husband pounded into her, and the thought got me a bit aroused. I wanted to feel a cock inside me, so I reached over to rub Reuben's crotch. He'd put in some airpods in order to listen to music while he played a game on his phone, so he couldn't hear what was going on in the room beside us.
"Not now, babe," he said, brushing my hand away from him. Unfortunately, that had become an all-too-common refrain from him in the last few years. It bothered me that he seemed to have lost interest in having sex. I'd worked hard to shed the baby weight I'd gained after our third child was born, and if you'll excuse me for bragging a little, I think I'd gotten in incredible shape--maybe even better than I was when we first got married.
"You say 'not now,' but you're never in the mood later, either," I complained, but he didn't hear me.
Obviously, I wasn't going to get what I wanted from him, so I grabbed my bag of toiletries and took them into the bathroom. I'd stashed my well-worn dildo in it, which I intended to use as a substitute for my husband once more. I perched on the edge of the bathtub and got to work. I pictured the salacious events occurring in the other room at the moment, getting so turned on that it didn't take long before I came.
On my way out of the bathroom, I heard the other bedroom door open, and Glen appeared from around the corner. He was only wearing a pair of basketball shorts, leaving me free to admire the rest of his body. While Reuben had let himself go since our wedding day, Glen spent plenty of time in the gym, so his abs and pecs were very well defined. His arms weren't overly bulky, but his thighs and legs looked quite powerful.
"Fancy meeting you here," he said when he saw me.
