I was in shock. I couldn't believe what I had just heard, but couldn't say anything as my mouth was full of pussy."So, what do you think of me now? A ...little surprised? Your sweet little ex is not quite as innocent as she used to be, is she? I told you I was super horny and very aggressive. Ooo yeah, baby...suck that clit. Now you get to see me in action. Jim's alright, I guess. A little too young for me, but he's got a nice cock and he fucks like a mule!" Sonja humped my mouth for a few minutes. Mmm, I just adore lezzie sex; don't you?Things got even better during the second week when, during one very horny early morning chat, she asked me to masturbate for her. Oh fuck, I just loved doing that, especially when she talked dirty to me, and she loved it when I spunked. She had gotten pretty turned on too, and told me she had done a two-fingered quick-step on her clit as well. Fabby!Soon, though, she asked about arranging a "meet". We had gotten to know one another on a very intimate. “Is this ok? I’ll leave you two alone if you want.” I reached up and untied my bikini top. She leaned down and took one of my nipples in her mouth. It was liked an electrical current ran through me from my chest to my crotch. I closed my eyes and let the feelings flow. After a bit, Veronica let up on her assault of my chest and Kevin paused in his licking, but then he started up again. It felt different, like he knew more where to go with his tongue down there. I opened my eyes to find Veronica. “Come on Red; it’s our turn.”I took his hand and stood on wobbly legs. His hand was warm and wrapped firmly around my smaller one.“A birthday spanking!”“Seventeen birthday spankings and one for good luck,” Melissa laughed. I gave her a dirty look. Apparently, she had no problems with me getting a sore ass.I felt the grip on Mark’s hand tighten. I looked wide-eyed at his sister, and he pulled me into the spare room.He locked the door, and I looked up at him. “You don’t have to spank me you know?.