" So you'll now tell me how I can make you come just with your nipples?" Gilly said with a cheeky grin."Yes, if that's what you want to do," Karen sai..., undoing her blouse. "But I'd better warn you, you'll have to do something you won't like."Gilly was moving towards Karen's tits when the warning stopped her. "Oh, what's that?" she asked."You'll have to hurt them, really hurt them, that's what'll make me come. Do you really want to do that?"After a few seconds thought Gilly said, "Yes, I can. "What she was talking about happened when we were fifteen years old. We had been exploring the caves for what seemed like hours when we stumbled on an area the size of a bedroom. There was an old mattress, and porn spread about along with some rubbers and some sex toys. Emma and I examined the sex toys, trying to figure out what they were for, as we had no idea at the time, and then looked over the porn which was only a bunch of playboys. We had talked for a while about what the area was used. ” She gasped. I growled and pulled her hair, she let out another gasp and laughed sexily, her head tilted fully backwards. I let go of her hair and forcefully pulled her body upwards and put my mouth on her breast. As I sucked and bit her nipple she stroked my hair, her legs now locked around my waist.“Good boy.”“Ugh, stop calling me that.” I said as I turned to her other breast. Jenn lowered herself a little, and my cock now touched her slit. She let out a gasp as I bit her nipple hard. As a. “What if they ever want to get married?” Bethany asked. I thought that she was asking for her future self as much as her sisters. “Their future husbands will have to understand that we are fighting for the survival of our species,” Cassie said.Celeste reached out and took my hand. I didn’t know if anyone could see in the gathering darkness.“Ok,” I said. “Let’s get you folks home.”We got the truck packed. Celeste went too so that she could gather some things that she would need from her room.We.