it's a shoujo manga.it's about a girl that likes a guy. However the guy does not like her. She then goes out with the guy's brother to try to get close to the guy. She goes to his brother after they go out and sees the guy she likes bring his girlfriend over. I think they do it and she hears. the next day she goes to the guy's house and does the same thing the guy and his girlfriend did to the guy's brother. I think the mangaka is watanabe shiho but i'm not sure.Can someone please tell me the title?I really want to reread this manga again. I forgot the title. 2i104h