- Actor Allusion: Fans have speculated that Kang Doos frequent eating of ice cream may be a reference to Junhos song Ice Cream.
- Dawson Casting: Averted mostly, as most of the cast play characters who have the same (or close) age. Junho and Kang Doo were born on the same year (1990), while Moon Soo is said to be close to his age (Jin Ah was born in 1991). But Joo Won and Yoo Jin were in the freshman class of 2004 in university, while Ki Woo was born in 1981 and Han Na was born in 1989.
- Irony as She Is Cast: Kang Doo mentions that he cannot sing. His actor Junho is one of the main vocalists of the Korean boy band 2PM.
- Those Two Actors: Junho and Kang Hyun were both part of TQ Group. Hanna and Kiwoo were also cast members of the drama series Miss Korea.
Trivia / Just Between Lovers