I went to my first sleep over when I was around ten or so and we did it most of the summer taking turns at each others houses. She and I became great friends and when we were around fifteen or so I was over at her house, she had a queen size bed so I always just slept in her bed with her. We were just laying there talking for about an hour, she turned off her lamp but there was still a small night light across the room by her door. She turned onto her side and I felt her hand land on my stomach, she kept talking to me about normal stuff and her hand kept moving around then on one of her passes her fingers touched the bottom side of my breasts. I did not say anything or move around and she did this a few times then her fingers went right over my breasts and across my nipples. I laughed a little and asked her why she did that, she replied that she just always wanted to touch them. She then asked me if I would lift my top up so she could feel my skin, she caressed my breasts and nipples for quite some time and I decided that it would be fun to touch hers as well. We laid there for an hour or so just running our fingers over each others breasts. It was one of the most erotic first times I have ever had in my life. We progressed to more over time but that first time touching and caressing each other will always live in my memory.