How My Stepson's Hard Cock Led to a Threesome with His StepSister

My stepson noticed that his dad hasn't been good to me lately, so he suggested I get back at him by making him think I'm with someone else while we are on a family vacation. I decided to follow his advice and took a picture grabbing his cock. I thought the only purpose was to piss my husband off, but my stepson's dick was rock-hard! I tried to stop him, but he said he was really horny, and his dick was big and hard. When I started jerking him off, I realized I haven't felt a cock like that one in a very long time, so I needed it to taste it. I sucked it and licked it until I felt alive again. Then, I caught his stepsister fucking him in the bathroom because she saw us and got jealous! She looked so hot and horny that I couldn't say no when my stepson asked her to join us in bed. I was desperate to show both of them how freaky I could be.