I've been having sex since my sister-in-law invited me to have sex a few days after we met. Then I live with my sister-in-law, but I have no conversation at all. No communication as a family. To have sex only. When I asked my sister-in-law what she was thinking about, she said one word ... "Because it's embarrassing ...". It turns out that his shy attitude was a misunderstanding, and that he was just shy! Oh, isn't this sister cute!? Even more adorable!