Greg's uncle Dave

During summer break my friend Greg asked if I wanted to come to his uncles house for the weekend. I told him I wasn't sure. Greg said he had a pool. A chance to swim all weekend sounded good. I asked my mother if I could go. After a thirty minute phone call to Greg's mother she said ok. I packed a bag and went to Greg's house. When his uncle pulled up, an older chubby man hopped out the van. After chatting with Greg's mother for a few minutes we put our things in the van and headed out. After a few minutes we pulled up to the house. Greg showed me to the guest room and put our things down. After finding the restroom, I came up front. Greg's uncle was giving him a hug a little more friendly than I've seen before. Not thinking about it I looked out the window to see the pool. It was an above ground pool with a hot tub built next to it. I asked if I could go swimming now. Dave said go ahead and change. Greg and I headed to the back. I changed in the bathroom while he changed in the guest room. We went out back and swam for a couple of hours. Dave came out and said lunch was ready. I went to change clothes and take a shower. When I came back, Greg was still wrapped in his towel sitting on Dave's lap. I sat at the table and we ate. After eating Greg went back out to the hot tub and sat. Dave said to go ahead and get in. I told him my suit was still wet. Dave laughed and said so what. Nervous, I didn't know what to do. Greg said it's like being in the bath tub and tossed his swim suit in the porch. I asked, you won't tell anyone would you. Greg laughed and said no, get in. I went and took off my clothes in the bathroom and came back wrapped in a towel. When I came outside Dave was in the tub next to Greg. I dropped the towel and jumped in. I sat across from them enjoying the bubbles and hot water. Greg closed his eyes and leaned back. It was a few minutes before I noticed Dave's hand between Greg's legs. Dave said I didn't have to sit so far away and motioned for me to sit next to him. After a couple of minutes I felt his hand on my leg. Not knowing better I moved it.
It must have been an hour when Dave said to go in and get dressed for bed.
Greg and I climbed into bed, and I knodded off. I woke up to use the restroom and noticed Greg was gone. Looking around for him, I heard noises from Dave's room. Looking in I was shocked at what I seen. Dave and Greg were laying naked on the bed, pulling on each others dick. I was toren between leaving and watching. The silence was broken when Greg said stop standing there and come in. Nervously I walked in the room. Dave said to come to him. When I did, he unbuttoned my shirt and pushed it off. Frozen, I stood there as he ran his hand across my chest then down my stomach. My little dick stiffened as Dave slid my pajama pants down. As I stepped out of them Dave lifted me on to the bed. I laid beside Dave as he took both Greg and my dick. He slid his hand up and down slowly. I watched Greg stroke Dave's dick.