Stepsister Decides to Share a Bed and Ends up in Threesome with Her Stepbrothers

The heating failed, she offered her room. We were under the blankets when her friend walked in with the same excuse. Three bodies seeking warmth, hands brushing, until she kissed us both and said she wanted to feel us inside. I put her on all fours, him in front, me behind, moving in rhythm until she screamed in pleasure.