when we were in our mid teens

I've always felt bad about what my friends and I did to this girl. We were all in our mid teens. Just a group of horny wild boys looking for excitement. We had this sexy 16 year old girl hanging out with us all the time. She was cute and sexy and always dressing kind of slutty. Loose tank tops with no bra and very short mini skirts. There wasn't much left to our imagination and we all knew what color panties she wore every day. She make it a point to sit with her legs apart or bend down flash her breasts at us. She had us in a constant state of arousal. We came up with the idea of getting her in a secluded area and give her a good groping and invited her to go down to the lake. There was an abandon farm house next to the lake away from any house or people. We all went down this wooded trail and got to the lake. We lured her in going up to the shed to investigate what was there. We grabbed her and pushed her back against an iron railing and tied her hands behind her back. She asked us what the hell we were doing so we told her we were going to take her clothes off and see the rest of her body. She was embarrassed but the anticipation of it happening visibly excited her. We just had to pull the string in her back and her top fell to the ground giving us a full view of her beautiful firm breasts. She was breathing hard as she felt her breast being fumbled and sucked. Her breast were moving up and down with every breath and her nipples got really hard. She was so horny and out of control she even kicked off her skirt when it fell to her ankles. Her legs were partly spread and you could feel the wetness in her crotch through the fabric. We each slipped our fingers under the elastic band of her crotch and began teasing her with our wet fingers up and down her pussy lips. She couldn't hold it in any longer, telling us to rip her panties off. As soon as her pussy was exposed we all took turns sucking and tasting her juices. She started to shake as she orgasmed. We untied her and gave her clothes back. She said she liked what we did to her and even jerked off a couple of the boys before we left. I guess it wasn't all that bad after all. More than feeling sorry , we should feel thankful for knowing her.