The guy wrote online that when his sister turned 18 and had to leave the orphanage where they both lived all their lives, he told her to go live with him as a couple, they already had sex for years while they lived in the orphanage so it wasn't anything new. But she said no, she wanted more for her life. Two years later the guy won a small prize on the lottery, enough to buy his small apartment and live without debt. Guess who's finally accepted the invitation? She moved in and is under observation, he says, but meanwhile the good times are back again.