Shock then reassurance.

At first Gerald was shocked at what Katrina was doing, then he became angry at whoever had made her feel so bad about her breasts that she had felt she needed to show them to her brother, then he felt guilty for having wanted to know what size they were this morning, then he felt sorry for Katrina who was obviously feeling inferior to the girls at his college. She had no reason to feel this, and he decided to tell her so. Sure she was his little sister, but if she needed him to tell her how sexy she was then he would just have to get past the ick factor and tell her.

"They're beautiful" he said "You're beautiful."

"Really?" Katrina asked.

"Yes," he said "and anyone who says different is blind and stupid. You have to stop listening to people who put you down and only listen to people who make you feel good about yourself."

"O.k." she said wiping away her tears and beginning to do up her shirt, much to Gerald's relief. As she did Gerald began to think about what had happened. It was weird how Katrina had suddenly decided that she wanted to tell him her bra size and show him her breasts when he had wondered about their size and thought about seeing them only this morning. Surely he couldn't have anything to do with it. He shivered. The idea that his desires had cause his sister such distress and led to her uncharacteristic behaviour wasn't a very nice one. Still, on the very slight chance that that they had, he needed to know so that he could ensure he didn't hurt her again.

He looked at her. Trust me he thought trust me totally and tell me your deepest secret. Then feel relieved that you have done so.

"You know I trust you Gerald." said Katrina

"Yes" he said.

"Good, because I need to tell you something, and I need you to promise to keep it a secret."

"O.k."

"Good, because the thing is ... I think I'm a lesbian."

"Really?" said Gerald, honestly surprised.

"Yeah." Said Katrina "I get turned on looking at the other girls in the shower and when I ... you know ... touch myself I keep thinking about girls. I've tried thinking about guys, but that only makes me feel less sexy. In fact if I don't want to feel horny picturing a guy naked kind of really helps. So like do you think I'm a freak?"

"Not at all" said Gerald "A lot of the girls at college are lesbians, which is hot unless you want to date them. And, while I don't want to think of you like that, if being with girls makes you happy you should do it. Just make sure you know a girl feels the same way about you before you tell her your secret. Society isn't quite as accepting as college."

"Wow! Thanks for being so understanding. I really needed to tell someone and now I feel so much better."

"That's O.k." said Gerald who had decided that his test had proved pretty conclusively that Katrina's actions were somehow controlled by his desires. Katrina smiled and walked off toward her room and as she did Gerald decided that he need to test whether this power worked on anyone else.