My girlfriends sisters - Part 1

I have been dating my girlfriend for 3 and a half years now, and I visit her house at least 4 times a week. I've made a close bond with her parents and both of her sisters.

A small section about us. I am just over 6ft, 19 years old and approximately 97kg. My girlfriends family are all small. For safety I won't use real names, but I'll use placeholders. My girlfriend, who'll be named Emily, is 18, approximately 5ft, and around 60kg. Her older sister, Angelica, is 22, 5ft 3in, and around 70kg, and her younger sister, Grace, is 14, 5ft 1in and approx. 40kg. I won't go on about their parents, as they aren't included much.

After 3 years of visits, everyone started to get more comfortable, and now it's as though I live there. Emily and I rarely get to spend time in their bedroom, as its a 2 bedroom house with all 5 living in it, so the bedroom is shared among the siblings. When we do get alone time, we have quiet, gentle sex, nothing too interesting. So, I'll skip to the interesting parts.

Starting with Angelica. She was a uni student, but recently graduated and is staying home while she looks for a job. She loves to wear revealing pyjamas, which is great for me. Our section of this story starts a couple weeks ago. Emily was at college, and I was sitting at her house waiting for her to get back. She had a couple of hours to go, so I was there for a while. Grace was at school for another hour and a half, and both of her parents were at work so it was just me and Angelica.

Angelica stood up after waking from a nap. She said hello to me, went to the kitchen, poured herself a drink, and as she was walking back I realised her ass had eaten her shorts. It looked as though she was wearing a thong. Playfully, I said 'nice ass' and she shot an evil, yet playful, side eye at me while still standing.

"Thanks, perv" she said with a small giggle after it. She bent down to sort her blankets she left on the couch, keeping her legs straight, and the view was glorious.

"Are you doing that on purpose?" I asked sheepishly.

She shook her ass slightly left to right, then sat back down and looked at me, taking a sip of her drink. "Doing what?"

"N-never mind." I didn't want to overstep the boundaries, but my cock didn't seem to care. It was rock hard, and Angelica could tell. My face was bright red, and I couldn't hold eye contact.

"Tell me." she demanded, and my heart was beating through my chest. I wasn't sure what to say, and kept stuttering.

"I-I thought you were... purposefully showing me your ass."

She stood up, closed the curtains, and walked across the room towards me. I was preparing for a slap. She turned around, grabbed the sides of her shorts and pulled them upwards, revealing every bit of her ass. My cock bounced in my pants. Then, without a word, she sat back down, took another sip of her drink and went on her phone. I was too stunned to speak, and my cock was throbbing.

An idea popped into my head. I thought I should reciprocate, and stood up, my 7 inch bulge clearly visible. I went and poured a drink, and didn't bother hiding my bulge as I walked back into the living room. She was staring as I came back through the doorway.

"Are you doing THAT on purpose?" she asked with a small chuckle. I smiled, and stood in front of her, pushing my waist forward and accentuating the bulge. She raised a hand, and slowly stroked my cock through my pants. I was shocked, but didn't protest. I put my thumbs into the waistband of my pants and pushed it away from my body, and she slide her hand inside, wrapping her hand around my bare cock.

After a few minutes, I slid my pants and underwear down and off, and knelt in front of her on the couch as she continued to stroke my cock slowly. I placed my hands on her roughly DD sized boobs and started fondling them gently, and a she let out a soft moan.

We kept on like that for some time, until she wrapped her arms around my waist and pulled me close, causing me to fall forwards. I caught myself on the couch behind her, with my cock centimetres from her face, and she took the tip into her mouth, sucking it slowly. I couldnt help but moan.

She started to take my cock deeper, sucking it passionately, and I could feel myself getting close. Then, the front door swung open, and Grace shouted "Hi!". I grabbed my pants and underwear and ran into the kitchen, quickly getting dressed. I went back into the living room, where Angelica's face was bright red, and Grace could see my face was bright red too. She looked at the both of us questioningly.
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Please let me know if you enjoyed this part of the story, and whether you would like part 2 or not!!