This missing scene begins after the end of Season 5, episode 2 - "True Lies"...
Damon hadn't said anything, but Elena could tell something was bothering him. It could be anything – anything from what she had said to him when she was under the influence of Silas to what they had just learned about Stefan. Whatever it was, he was keeping it to himself.
Sheriff Forbes was making arrangements for the body that had just been found. Damon and Elena had been walking through the woods nearby; seeing if Stefan, or anyone else, had left clues about where they had gone. They had found nothing, and had heard nothing from the sheriff about the identity of the victim, so they were about to give up and try to connect with Jeremy instead.
Being with Damon made Elena realize how much she had missed him; she really was glad to be with him, now that she was in her right mind again. Still, he was saying so little, and she could tell he was upset. It was unnerving her.
They were headed back to his car when he finally said it. "I can't believe we're back here again." He hesitated, then added, "I knew it could happen. I just didn't think it would be so soon."
When he didn't elaborate after a few seconds, she asked, "Back where again?"
He stopped and looked at her as he answered. "Back to 'Ripper' Stefan."
She wanted to deny it. "Couldn't it have been Silas?" she asked softly.
He scowled, shook his head and started walking. "It's Stefan's 'MO'."
He walked in silence again for a bit before she couldn't stand it anymore. What she had said to him, what she had done to him while she was under Silas' influence was eating at her. He didn't seem to need her to say anything about it, but she just had to.
"Damon," she said, "I'm sorry."
"For what?" he asked, stopping and turning to face her.
She had to look away to answer. "For the stuff I said when I…when I had you tied up."
"Elena…" he began, but she interrupted him, still unable to look at him.
"I can't believe I'm back here again," she said, shaking her head as she repeated what he had said just before. "How many times am I going to come to my senses and have to apologize to you for what I said?"
Damon's expression softened. "How many times am I going to have to tell you that you don't need to apologize to me, no matter what you say?" Damon asked. "Say whatever you want – I can take it."
"Still," Elena said, then tried a different approach. "I wouldn't have said those things if I was in control."
"Sure you would have," he retorted. "You might not have tried to kill me, but you would have given me an earful."
"Yeah," she admitted.
"Honestly," he added starting to walk again, "you say 'what were you thinking?' so often that I'm starting think that you think it means 'I love you'."
She followed him saying, "It means I can't believe what you're doing. You should have told me about Jeremy, and about Bonnie's dad."
He stopped and looked at her again. "I was thinking that you would leave school to try to fix things. I was handling it. Bonnie only talks to Jeremy, and Jeremy's still trying to adjust to being back. I got Jeremy back into school and you need to stay in school."
Elena nodded and agreed. "You were handling it. I can see that now." She hesitated briefly, then asked, "And you're really secure with our relationship, even though I get feelings about Stefan sometimes? Even though you had to make me concentrate on those feelings to snap me out of Silas' control?"
Damon shrugged and headed for the car again. "I want to save him, too."
Elena shook her head. "You must think I'm awful," she said softly to herself as she started following him.
He stopped suddenly and faced her again, taking her head gently into both of his hands and pulling her eyes up to look into his. "I'm starting to think that you don't understand, Elena. I don't care what happens; I don't care what you do, or try to do, to me. I don't care what I have to do to reach you. I'll take whatever you think you have to do or say to me, I'll do whatever I have to do to reach you - I don't care. I only care if, when you are yourself again, if you come back to me." He kissed her gently, then added, "That's all I'll ever need."
Damon turned and started walking towards the car again, though this time he held onto one of her hands as he walked. Elena was caught off guard, but moved to match his speed; wondering, not for the first time, what she had done that had earned such a commitment from him.