When did Chul Soo fall in love with Su Jin?
Was it from their brief encounter at the convenience store, or later, after the incident with the purse snatcher? He definitely remembered her from the convenience store, because he snatches her coke away from her and drinks it.
Cheol Su was working on the wood carving of Su Jin when she "happens" to bump into him and his friends while out with her gang of girlfriends. If you watch the scene closely, upon seeing her, he quickly stashes the carving into his tool pouch under the table. So she was already on his mind from at least the purse snatching incident which happened before the "chance" encounter with the friends.
Any thoughts?