The title of this episode, 'I'm Thinking of You All the While,' comes from a 1903 song composed by 'David Reed'.
Nobody mentioned that Damon will die as Katherine ultimately did when she turned human. His aging would catch up to him if he takes the cure, as he is over 160 years old. However what has been forgotten was that Katherine was fine and did not start rapidly aging until the cure was drained out of her by Sylis so as Damon said a couple of episodes earlier as long as no one drains it out of him then he will be fine