<P> Alaric is a vampire hunter looking to avenge his wife by killing the vampire that killed her . It is soon revealed that the vampire that Alaric is hunting is actually Damon . Before killing Alaric, he confesses that he didn't kill Isobel but turned her . Alaric is brought back to life by the Gilbert ring . The two remain enemies but work together on occasion . Eventually, the two become best friends and drinking buddies . Even after Alaric is turned into a vampire who kills other vampires, Damon does his best to ensure that they don't have to kill him . But with Elena's death, Alaric dies as well while Damon holds him . In the episode, "Memorial", it's clear that Damon still misses his friend as he talks to Alaric at his grave . Unknown to him, Alaric listens to the whole thing and even responds with "I miss you too, buddy". Damon's best friend . </P> <P> Bonnie first saw Damon in Friday Night Bites when he dropped Caroline off at cheerleading practice . They first interacted in Haunted, when Damon learned that Bonnie had come into possession of the Bennett Talisman . He needed this to open the tomb which Katherine was locked in (for 145 years or so he believed). At first, Bonnie didn't want to have anything to do with Damon, saving his life only for Elena's sake and soon blaming him for Caroline's transition into a vampire . However, as time went on, Bonnie was put into situations where she had to work with Damon to achieve what they both wanted (albeit reluctantly at first). Their teamwork has often proved to be beneficial for the both of them . Their relationship has even come to a point where Damon is visibly worried for Bonnie's well - being and was devastated when he found out about her death . The improvement of their relationship is seen in Damon's efforts to help bring Bonnie back from the dead . However, their unique friendship hit a speed bump when Damon reverted to his old ways . Finally, they stood side by side with each other as The Other Side collapsed, holding each other's hand and at peace with what is to come for the both of them . They later discover that they are trapped in a 1994 Prison World . During that time, they start to bond and form a close alliance to take down Kai . Before sending Damon back home, she mentions that he's not exactly the last person she would wanna be stuck with . When Damon returns home, he does everything he can to find a way to bring Bonnie back, including a long road trip to Oregon to seek the Gemini Coven, and also compelling Alaric to steal the Ascendant from Jo . They finally reunite at the Salvatore Boarding House with a hug after Sheriff Forbes's funeral . It's shown that Damon and Bonnie genuinely care about each other and have made sacrifices for each other . </P>

When does damon turn his humanity on season 1