It was casual and accepted. So we were used to seeing each other in various states of undress without any silly feelings of shame or shyness.One day w...e were home alone as it happens some times. I took a shower and as I left the bathroom to my bedroom, my sister met me wrapped in a towel on her way in to take one of her own. Sarah playfully grabbed my towel and pulled it off me as I brushed past her, and I did the same to her in retaliation. There we were, standing in the hallway, completely. His cock had soon shrunk down and he wiped his hands in the sand, said "thankyou, your a star". and with that he was gone. I looked down at my shrinking cock to see that I was completely covered in cum. Luckily the beach was almost empty and I was able to run down to the sea to wash it all off.I made my way back to my tent and lay down again to catch some more rays. About 30mins later I was lying there thinking about what had happened and felt myself start to get a little bit hard again,. For the rest of the time at school that term, I completely forgot about that earlier conversation. When we went on study leave, 3 weeks before the first exam, the ‘phone went. Seeing as I was the only one in the house at that time, I answered it. It was Ed.“We’re trying to find your house, mate. Where are you?”I was confused for a second, and then recalled the conversation from several weeks earlier. I instructed him in where to go.It was 10a.m. but already the house was a mess. I dashed around. I began to swallow his wonderful load and he started to spurt some more in my mouth and It was too much for me some slipped out of my mouth on my chin. When he was done cumming he looked down at me on my knees smiling with cum on my face and in my mouth and asked, “Did you cum in your panties you hot little slut?” “Not yet," I said, "I was more focused on giving my first blow-job why do you ask?” “I want you to cum in my mouth now.” I was so shocked and aksed him, “Really?” “Yes,” he told me.