"Did the undies work for you?" Um, did you even look at them? They're practically see-through. I can't wear them," she said."Really? If you don't like...them we can go back later and you can pick out some different ones," Dan said, excited by the idea of underwear shopping with his innocent little sister."That sounds embarrassing. I could just go by myself," she said."It's on my credit card, so I kinda have to go," Dan replied. "Plus, someone has to make sure you don't get more granny panties!". It was nice being close to her. Nina was seeing a shrink and everything was coming together. She seemed happy.I was thinking about her every morning as I jerked the meat. Nina naked was in my dreams and thoughts. At school I got a hardon in math class thinking about her slim body and dancer's leg's. She looks alot like the girl in Alias. Thick lips, heart shaped face and smiling green eyes. Every 17 year old boy wants to fuck his older sister, hell every teen boy wants to fuck any sister! I was. When I entered the kitchen Daddy was just carving the meat. He looked up from the carving dish, looked me up and down, smiled and said, "Very pretty Becci. You've certainly grown into a very beautiful young lady." I was conscious that his gaze faltered at my nipples and at the wet patches on my stomach. His eyes wandered everywhere. They travelled from my face down to my nipples then to my stomach and finally to my legs before returning to my face. I think I started to blush a little so went to. "Her eyes widened a little and her tongue tip wetted her lips."I don't want to cheat on Chris," she whispered finally."This is cheating. Don't kid yourself... let's enjoy it, Brenda. It's like a 'One Free Cheating' card in Monopoly." He rubbed his erection against the soft splay of her legs and she drew in a little shuddering breath. Oh, see wanted him all right. "Brenda, I want you to let yourself go. This is going to be our secret."She remained silent but her hands came up to softly hold his.