They used to be inseperable, Mike and Lisa, twins. But as they grew up, mike began to realize he had needs that his sister could not fill. He needed the touch of a woman, and she was his sister, something that never crossed his mind, he knew it was wrong.
So, Mike had sought out a girlfriend, and had found one. Now Kelly had told him she had a surprise for him, and taken him out to dinner and then in the back of his truck she gave him his first blow job. He couldn't believe how amazing it had been. They had had sex before, but this took things to a whole new level.
What a birthday present he thought as he drove home. What would the guys in his college freshmen class say when he told them, if he told them.
As he pulled into his parents driveway, he was staying there over the long weekend. he was taking summer classes between freshmen and sophmore years of college and only had class monday through thursday so usually stayed at his parents house friday to sunday. Today was saturday.
As he pulled into the driveway he absently noticed his sisters car and then gulped. Lisa and he had spent every birthday together since birth. He hadn't even called her. He felt like a jerk, but... even his sadness at standing his sister up could barely dampen his elation at what'd happened to him.
He had dropped Kelly off and come straight home. but now he was afraid... how upset would his sister be. He knew he'd been a bad brother. He looked at his watch, it was close to 10 PM... "Well there's still 2 hours left of our birthday... Maybe she'll forgive me." he said shrugging and jumping down from his truck and rushing into the house. His parents were away for 3 weeks while his father had a business trip, and their step mother just took a vacation with him. He didn't really care that his parents weren't there, but it just made him feel all the worse because it meant Lisa had spent their birthday totally alone.
"Honey!, I'm home." he yelled beginning to search the house for his sister.