More Teenage Masturbation, Boy and Girl. part 3

Next morning over breakfast I was alone with Helen as the girls were still in bed and her husband had gone to get some spares for a machine. She asked me if I was enjoying myself at the farm as it was good for the girls to have a boy for company of much the same age. She said that they had led a sheltered life at a girls school and as the farm was remote she had few local friends. I said that I was enjoying the work , trying to keep off the obvious subject of developing sexuality. But this was not to be. She said that at their age she had had boyfriends and had known all about sex . So I told her that the girls had related some of her teaching about sex the previous day and that I knew something about it as  I had a girlfriend at home and we had gone to the woods together several times. Smiles all round. All this talk of sex was giving me an erection - I got them all the time in those days at the slightest provocation - and it was having some affect on her as she again kept leaning forward so that I could see down her cleavage . Like most teenagers I was aghast at the thought that my parents might be interested in sex and so I had to adjust to this obvious interest from a pretty woman ,who was of my parents generation but about 10 years younger.  Fortunately her husband returned home to rescue me from where I dont know. We went off to repair the machine and to start the days work. I thought all day about this conversation.Was she giving the girls and I licence to have sex , was she interested herself ? All these possibilities went through my mind . I felt a bit uncomfortable despite the opportunities as whilst Ruth was her daughter, Anne was a friend whose parents might not be so obviously liberal as Helen. As for  Helen, that just felt out of reach as she was married and a distant relative.. Even so, I got erections thinking about her.  The day was very hot and when I went back for evening meal the atmosphere was again sexually charged as Helen and the girls had been swimming in the sea, about 25 miles away and were showing off tan lines , and as much as they could without being too revealing. I realised then that so far I had not touched or seen their breasts or kissed them despite having seen the girls cunts and having felt both and fingered Ruth. And Ruth had made me come . At least I had kissed my girlfriend before we started to strip and enjoy nakedness together.  However, nothing was to happen that night as we all stayed in and played board games . As we went up to bed I said to the girls that  I enjoyed seeing the tan lines . Ruth came over and kissed me goodnight which triggered an erection. I then went and kissed Anne . More excited chatter from their room as I fell asleep after a long and enjoyable wank. And another one in the morning .  Part 4.  Next day was a day off as the next field was not ready for harvesting and I was getting a bit tired. We had breakfast all together , the girls doing their best to show their tan lines and figures . Helen tidied the bedrooms and afterwards asked me with a smile whether I had a cold as I had used a lot of tissues. This caused giggles from all of them and I guess I went red in the face. Even though I had got rid of the sperm soaked tissues, the box was open and used I suggested that we walk around the farm as I had still not seen all of it and the countryside was very pretty around there. It was hot so we took a small picnic and water to drink and set off away from the farmhose with Ruth leading the way. We eventually came down to a river about 15 metres wide and quite fast flowing. There was a bench on the river bank - put there by Ruths grandparents as this was a favorite place to rest and relax. We sat down and had a drink. It was very hot . I said that I wanted to swim but we had not brought swimming kit. Ruth just smiled and said that her Mother had suggested that we come here as she used to skinny dip as a girl. The place was totally private, no footpaths or roads.  At that she started to strip off. So did Anne  and I . We were quite naked, all 3 of us. The girls were lovely, pretty breasts, Anne having longer nipples and Ruth quite puffy nipples. My cock was , of course , erect . We just gazed at each other , eyes drinking in the shape and sexiness of the others. We went into the water, fortunately their was a sandy bottom at that place , and swam around splashing and laughing.  I got out first and just stood there drying off in the sun as the 2 girls emerged. The cool water had worked on their nipples which were now standing hard . I could not stop so I went over and kissed their nipples one by one and immediately had 2 hands on my cock. We fell onto the grass and just let ourselves into a tumble of kisses and feels. I had a finger in both girls and ended kneeling between the 2 of them. They wanked me and I fingered them and rubbed their buttons - clitorises .Anne started to breathe deeply and suddenly let out a loud groan. She had had an orgasm. She let go of my cock so Ruth wanked me with 2 hands and I concentrated on her cunt. I reached down and kissed her nipples and then she, too, started to writhe and groan and came with a sort of yell. They were both hypersensitive to touch by then so I wanked myself and as I came, I came over first one and then the other , all over their breasts.  We laid back exhausted for now and recovered in the sun. I had to move into the shade by then leaving the girls to sunbathe and recover their energies.  We went into the water again to wash off the sperm and to cool off , then after drying we walked on , all holding hands and with me kissing each girl in turn .  We got back for a meal and Helen asked about our morning. Ruth said we had been swimming. Helen said ' but you did not take costumes' with a knowing smile. So Ruth said ' we skinny dipped just like you said you had done when young'.  So Helen just said ' well now you know the differences between boys and girls. We all 3 blushed a bit at that. Helen looked pleased . Probaly wistful, too but I was too insensitive at that age to sense it