It's driving me crazy. =_= I remember that I read the synopsis in English but I can't even remember the author or publisher. It's about a girl that after a series of events with let's say Bob, she falls in love. However, later when she meets Bob again he doesn't remember her. Then there's this other guy Bill (maybe Bob's brother or twin??) who tells her not to talk to Bob about when they met.
________________ As they played the game...I waited for someone to call "onigiri." But no one called. I was very little then. I had almost forgotten about that. [...] But they knew...there would never be room for an onigiri...in a fruits basket. -Tohru Honda, Fruits Basket