As heard in Lie To Me's emo scene:
Elliott Smith - Between The Bars
Gun Woo finds out that his dad bought a lottery ticket worth billions. In addition, he also finds out that Young Hee confessed to Soon Geum earlier than him.
Young Hee unexpectedly spends the night with Da Kyum, he gives her a palm-sized painting of his grandfather's (I got to see this to believe it. In fact, I refuse to believe this and will chuck this aside as the c-translator's mistake).
Also, one of the maids of 1st Street is quietly following Soon Geum...