Sir, You're Merely a Substitute - Episode 3

Alex collapses in public while wearing a wedding dress, causing a crowd to speculate about her involvement in a deadly family fire. Joel confronts Alex, accusing her of being deceived and burned because of trusting him, but he insists on his innocence and pleads for her trust. Alex, feeling betrayed, questions whether Joel's care was genuine or just a pretense, to which he coldly admits he never truly cared. The episode ends with unresolved doubts about Joel's true intentions and Alex’s painful realization of betrayal.