Hayate no Gotoku! Chapter 144:Even in Historical Dramas, Seeing a Shower of Cherry Petals Makes You Honest. (時代劇でも桜吹雪を見れば人はたいてい素直になる,Jidaigeki demo sakura fubuki o mireba hito wa taitei sunao ni naru?)
It is implied here that Hayate had a falling out with his 1st girlfriend.
After Ayumu had made the suggestion of singing a song on the stalled Ferris wheel, Hinagiku sings a song featuring the lyric "Dango". This is a reference to the ending theme "Dango Daikazoku" from the anime series Clannad.
