Elena remembers Damon in Season 2, Episode 10, "The Turning Point". This is the episode where Damon compels Elena to forget about him, but her feelings for him are so strong that she remembers him shortly after.
Here's a breakdown of the events leading to Elena's memory:
- Elena's Feelings: Elena has been developing feelings for Damon for several episodes, despite knowing he's a vampire.
- Damon's Compulsion: Damon, realizing Elena's feelings, compels her to forget about him for her own protection.
- Elena's Memory: Elena's feelings are too strong for the compulsion to hold. She starts remembering Damon and the events that led to his compulsion.
- The Turning Point: This moment marks a significant turning point in their relationship, as Elena begins to understand her feelings for Damon and her desire to be with him despite the risks.