I let my boyfriend fuck my sister

I have a boyfriend who I’ve been dating 2 years now. He has met my family and both my parents and my sister loves him. When we sometimes argue, they will always take his side. And him and my sister have really hit it off. They would joke around and have no no problem hanging out alone. I catch him checking her out few times and sometimes my sister would randomly just stare at my boyfriend but doesn’t bother me. One day she came to me and asked about him.
She asked how big he is and if he as good in bed and what position he prefer. I was confused at first. Why would she ask that kind of questions. I asked her if she wanted to fuck him. She was like idk and blushed. OMG! The idea of him pounding her kinda sounded hot. So the next day I asked him if he wants to fuck my sister. I led op to that question and he kind of liked the idea. So I asked my sister to come over and she did.
And I told her to go into my room. She was confused. But went inside and she was in shock. She couldn’t believe her eyes. He was lying on the bed naked with a boner. She blushed and stared at it. I guided her towards his dick. I moved her head and put his dick inside her mouth. She began to suck it. And she was good. I took my clothes off and began to massage his balls.
And moved her head deep. And I then gave him a blowjob. He came inside my mouth. I swallowed. While he was reloading he ate mine and my sisters pussy. For 20 minutes or something like that. And began to pound my sister. Uff it was hot. Fucked us both. He then came inside my sisters mouth. She swallowed it, to my surprise.
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