CHAPTERS FOR EACH PAIRING!!
Director Asagi x Ion: 1, 5, 14.5, 15-17, 29&30, 40-42
Gii x Haru: 12, 18, 21, 26, 27, 34, 35, 40.1
Kai x Nakahara: 4, 4.2, 13, 36, 37, 40*
Mr. Li Ryuuki: 14 15-17*
Li Ryuuki x Guile: 19, 20, 28, 39
Yoru x Ebihara Muga: 22- 25, 31
Dr. Ryougoku x Kio: 7-11, 40*, 42*
Nagami x Yuusu: 2, 3, 4.5, 38
Matsuri x Tsugi Rokuhara: 32 & 33
Chef Kouichi x Mayama: 6
Sai: 5
hopefully this will be helpful to somebody else. I really like the GiixHaru chapters myself :)
Ai To Yokubou Wa Gakuen De