Started With 'Want To Touch It?'

My mom remarried when I was 13 to a man with an older son that also lived with us. He was 16 when this happened. It was during the summer when we were out of school on our break. Mom and his dad were both at work. I got up and then headed to Aaron's (his name) room and knocked on the door and went in when he said "come in". I was in my short night gown and when I went in, Aaron was still laying in bed wearing only a pair of briefs. I sat on the bed facing him so we could talk. I was asking him what he had planned that day. As I sat there, I couldn't help but notice him looking at my legs and up my gown. I knew boys will do this so didn't think anything about it. Then, I noticed it. I could see his penis in his briefs and it was getting big. I knew boys get erections but I'd never seen one up close like this before. We continued to talk and it continued to grow. I couldn't get over how big it was getting. About this time, Aaron looked down at it and then said "see what you did to me"? I just grinned as I looked at it. Then, he looked at me and asked "do you want to touch it"? I looked at him and asked "can I"? Aaron said "I wish you would". I then moved a little closer to him and reached down putting my hand on it. I ran my fingers along its length and Aaron said "ohhhh, that feels good. Don't stop. Please don't stop". I kept running my fingers along it and could feel it kind of twitch to my touch. Then, Aaron asked "you've never seen or touched a boy like this before, have you"? I said "no". He then asked "want to really see it"? I just shook my head "yes" Aaron then reached down and lowered his briefs and laid back with his penis pointing straight up towards his head. Aaron said "please touch it again". I put my hand on it and again Aaron made this "ahhh" sound when I did. He then said "ohhh, that feels good. Want to see me come"? I answered "OK". He then took my hand and showed me where to put it and how to move it on his penis. I took over and Aaron was like in another world. He said "please don't stop. Make me come. Oh, it feels so good". I continued and before long, Aaron started shaking some, pushing his hips up and saying "Oh, Joyce. I'm going to come. Ahhh, I'm coming" and the first squirt of the white coloured stuff came out of his penis landing on his chest. Right afterwards, another squirt and another. I was amazed at seeing this. I took my hand off his penis and felt the cum that was on my thumb. Aaron then said "thanks. That was fantastic. We'll have to do this again". Well, I got up and we went about our day but we knew things weren't going to be the same any more. We had the whole summer to go being alone all day. Sure enough, the next morning, Aaron was in my room first thing in the morning with a big erection in his briefs. He sat on the edge of my bed and this time I let him put his hand up my night gown. We ended up getting each other off every morning all summer long. As a result of Aaron and all of this, when I started dating, I was an expert at these things and my boyfriends sure benefited from what Aaron and I had practised on each other so often.