She was so wet; I slid my fingers over her slit then started rubbing her clit. It was so hard and I ran my fingers around and over it. She leaned back...harder against me moaning. I then slid two fingers inside her and she started rocking back and forth against me. Her ass was pressing down against my pussy as I slid my fingers in and out of her. I could feel myself begin to orgasm as she started to buck wildly from her own climax. As her climax stopped I pulled my fingers out of her and lifted. I said to her "this is wrong, but you feel so good and tight!"Caroline said "Donna and Bill are away to work now, so you're mine now. I know am bigger and an SSBBW but am top what you going to do?".I said "well roll you off me".To which Caroline my Mother-In-Law said "do you think so?", and promptly held my wrists down against the bed and started fucking me hard."Caroline, I've always liked you and obviously I have no choice"She let my arms go, it wasn't quite how I'd envisaged it but what the. I faced Tara, pulled the bud out of her ear, “Why are you being such a bitch? I didn’t do anything with you that you didn’t want and you got what you were after, my nuts still ache” I complained.My sister cringed and flinched as if I had slapped her, she shifted her eyes to me, “I don’t remember doing anything with anybody. I remember falling asleep beside you then this morning I was in my own bed. The only thing I know is that I couldn’t find my underwear.”“What the fuck Tara, did somebody. I slowly increased my stroke speed and pushed my penis till her vagina end. The moments were really enjoyable. I kept increasing the stroke speed and thrust pressure. When I was fucking her, I want to hit her vagina hard with my penis. So, when I was pulling my penis out for the next stroke, I slightly increased the distance and applied heavy pressure when inserting my penis into her vagina. My penis went and hit her vagina end. Her body was mildly shaking due to my actions. I continuously hit.