<P> After Katherine kills Jeremy in' Down the Rabbit Hole' Damon stays behind determined to find the missing Bonnie, telling Stefan he can't come home without her . Eventually he finds Bonnie, hugging her in relief, but when the two arrive back in Mystic Falls in informs Stefan Bonnie has lost her mind . Elena, who had been in denial about Jeremy's death, comes into reality and demands Damon bring Jeremy's body downstairs . When Elena starts breaking down Stefan urges Damon to help her, indicating he should invoke the sire bond to take away her pain, however instead Damon tells Elena to shut off her emotions . In the next episode Damon begins trying to track Katherine in order to find the cure while Rebekah attempts to tag along . He finds an old friend from his past, Will, dying from a werewolf bite and kills him out of mercy . He arrives back home just in time to stop Elena from killing Caroline and takes her with to New York . While in NY Damon begins investigating Katherine's whereabouts and tries to keep that he's looking for the cure from Elena . Elena finds out and attempts to play him all the while Damon tells her and Rebekah about his time here in the 1970s . He admits that he had his emotions off and Lexi had come to help him on Stefan's behalf, however he tricks her into believing he fell in love with her only to leave her trapped on the roof during the day as revenge . He reveals that the reason he killed Lexi in season one was out of the guilt she stirred in him . Elena kisses Damon and attempts to steal Katherine's address out of his pocket, however Damon was aware she was trying to play him the entire time, and attempts to convince her to turn her emotions back on . Rebekah shows up and snaps his neck . He then calls Stefan and the brothers attempt to track down Elena . The decide to give up on the cure after Elena kills a waitress and threatens to kill people . </P> <P> In' Pictures of You' Damon, along with Stefan, decide they're going to try making Elena turn her emotions back on . The Salvatore brothers decide to take Elena to the prom, where Damon asks Elena why she told him she was in love with him and it's the most real thing she ever felt . Elena tells Damon that she only said it because of the sire bond and she feels nothing for him . However, later when Bonnie nearly kills Elena, she cries out for Damon to help her and he locks her up in the Salvatore basement . Damon then manipulates Elena's dreams in an attempt to remind how much she loves her friends in family, however when it doesn't work the Salvatore brothers (per Stefan's advice) try torturing Elena to get her to feel emotion . Elena however calls their bluff and attempts to kill herself, knowing Damon would never really hurt her and let her die . Damon realizes that Elena is smart and that torture will not work . After Katherine frees Elena Damon comes up with a plan, killing Matt in front of her (while he wore the Gilbert ring) and it works to get Elena's emotions back on . When Elena focuses her hate on Katherine Damon tells Elena where Katherine is, but tells her she shouldn't try and kill her . Damon admits he hates Katherine, however he knows once Elena kills her all her other emotions (grief & guilt) will all come flooding back in . Elena stakes Damon in the stomach when he attempts to stop her . </P> <P> In the season finale' Graduation', he tries to give the cure to Elena, but Elena refuses, which tells him that there is no more sire bond . He gets shot by Vaughn with a bullet laced with werewolf venom, and almost dies, but Klaus comes back to Mystic Falls and saves him . At the end of the episode, Elena proclaims her love for him stating that of all the decisions she has made choosing him will prove to be the worse one . </P> <P> Not aware of Stefan's absence and Bonnie's death, Damon and Elena are having the time of their lives before Elena leaves for Whitmore college . College brings a lot of ups and downs to the on screen romance . Katherine begs Damon to protect her as she feels someone is after her, Damon by the help of Jeremy's vampire hunter instincts that Silas is possessing as Stefan . Silas gives Damon a crash course on why he looks like Stefan and tells where was he the whole summer, shocked to know about this he starts to search Stefan with the help of Stefan . Silas mind - controlled Elena to kill Damon but Elena resists it by thinking about her worries for Stefan . Both Elena and Damon, with the help of Sheriff Forbes, finds the safe where Stefan was drowning the whole summer, but only to find a dead body . Due to both Elena and Katherine having same nightmare of Stefan all three, Damon, Elena and Katherine search for Stefan . Damon finally finds Stefan inside a hut where he is tied up in the chair and Qetsiyah makes a link of Stefan with Silas which fries Stefan's brain . Qetsiyah reveals to Damon that his relationship with Elena is doomed . Damon and Elena take Stefan where both of them finds out that he has memory loss and can't remember anything . Damon, to make Stefan remember about his past life, gives him his journals and spends quality time with him . Jeremy tells Damon that Bonnie is dead and Damon finally tells Elena about Bonnie . At Bonnie's funeral, Damon consoles Elena . Damon wants to help Silas so that Silas can do a spell to swap his life with Bonnie as Silas wants to die . Silas had seen Qetsiyah going to the party therefore both Damon and Silas goes to the ball party at Whitmore College . Silas needs Damon to kill Stefan, so that he can get back his power . Stefan, after waking up, tricked Damon and snapped his neck . At Salvatore's mansion they bring a desiccated Silas, to trade Silas's life with Bonnie he must become mortal (witch). The only way is by the cure so Elena and Damon calls Katherine who has the cure in her blood and after she arrives her blood is drained by Silas, but still Katherine lived . Amara is then awakened and revealed to be the mystic anchor . She then cures herself of her immortality by feeding off Silas . </P>

What episode do damon and elena fall in love