Finally giving in to my younger sister-in-law [MF]

I’ve been married for about seven years, I love my wife, but our sex life has been on a permanent downturn. From time to time, I stray, but usually I keep the affairs at a safe distance. Until I didn’t.

I started dating my wife when she was 20. I was 26. As we dated, a lot of time was spent out drinking with her and her friends — and her little sister. Her sister is three years younger than her. An adorable face and has always had a little crush on me. She’s been flirty since we met. She’ll grab my ass, brush her huge tits up against me. She’ll even tell me how hot she thinks I am when my wife isn’t around. She’s thicker than my wife, who is a runner, and most of that comes from her giant tits. She always wears low-cut shirts and I know she catches me staring. Oh, the hours I’ve spent jerking to the thought of those tits…

Take all of her flirting and multiply it by 10 when she drinks. Usually there’s a buffer of other people close by, so it never progresses. Which is probably why we shouldn’t have been left alone in the basement the other night.

We’d gone to her and her husband’s house for drinks and dinner — oh, she’s also married. We were all a little drunk. My wife gets tired early, so she took the kids and went home. In the basement, my sister-in-law was on the couch next to me. Every time she leaned in to talk to me, I would stare at her perfect cleavage. Her husband, who tends to get excessively drunk, made his way upstairs and passed out on the couch.

When we realized we were alone, I looked at her and said “I should probably go.” She leaned in. “Or you could stay.” She again caught me staring at her tits. I only knew because when I looked back up at her big brown eyes, she was biting her lip and smiling.

“What are you doing to me?”

She shrugged, pretending like she didn’t know what was about to happen. “Aren’t you curious to know what they feel like?”

My heart was racing. My dick was instantly hard. She noticed it growing inside my jeans and smiled. She slid her hand over my thigh and used it to pull herself closer. She smelled so good. I moved in, restraining myself as much as possible, but my lips were inches from hers.

Her hand moved closer up my thigh and onto my hard cock. I let out a moan. “Is that for me?” You fucking know it is. She moved her lips out of reach and started kissing my neck while she rubbed my dick over my pants. She stopped to whisper “try to be quiet” in my ear. Before I knew what that meant, she undid my pants, pulled out my dick and lowered her lips onto it.

It’d been so long since I felt a woman’s mouth on my cock, I could feel the cum swelling immediately. I briefly looked down at her tits bouncing as she stroked my dick into her mouth. I had to look away before it ended too quickly.

She moved her hand down to my balls and took my entire dick in her mouth. I moaned again…whispering her name. She popped up for a second and said “make sure to cum in my mouth so we don’t make a mess. I want to be able to keep doing this.”

She shifted to the ground in front of me so I could look her in the eye as she took my dick into her mouth. After another two or three strokes, she looked at me and said “this is my dick now.” With that I grabbed the back of her head and exploded into her mouth. She took every drop and didn’t stop stroking until I was completely empty.

After she swallowed my load, she sat up to compose herself and I put my soaking wet dick back in my pants. I pulled her to me and kissed her as if seven years of pent up frustration had just been released. I pulled her by the hair, looked at those gorgeous eyes and said, “it‘s your dick now. You better take care of it.“

And she does…a lot.

Source: reddit.com/r/gonewildstories/comments/d0b5j8/finally_giving_in_to_my_younger_sisterinlaw_mf