This missing scene begins about 10 minutes before the end of Season 4, Episode 23 - Graduation...
"I just can't believe it," Stefan said. "They fight constantly."
"You saw it coming," Lexi said. She was trying to speak calmly, but didn't appreciate the subject of their conversation. Still, she was willing to talk about this, for Stefan. He seemed to need to get his feelings about Elena out.
"I still can't believe it," Stefan said, acting as if he hadn't seen it coming.
"Well, I saw coming", Lexi said.
"Why?" Stefan asked. "Because she punched me? She's hit Damon before. She staked him just a few hours ago. She hasn't done anything to me that she hasn't done to him"
Lexi shook her head, was he really this dense? "You heard them fighting over saving the world, and you said they were ignoring the elephant in the room - her feelings. She didn't fight with you about saving the world, she fought with Damon."
"Damon had the cure," Stefan insisted.
Being with him wasn't as pleasant as she had hoped. "Hey, I'm just telling you what it is. There's no reason to get upset at me. I thought you wanted to see me."
"I did… I mean I do," Stefan said dejectedly. "This isn't your fault."
They were driving, having left Elena and Damon. Stefan was to dispose of the body of Silas, and then he wasn't sure what he was going to do. But he knew that none of this was Lexi's fault . His time with her was so short, and he wasn't sure why he was bringing the situation up. He just couldn't stop himself.
"It has to be the bond. " Stefan insisted
"So there was no sign of Elena's feelings for Damon before the bond?"
Stefan looked uncomfortable and didn't immediately answer, so Lexi pressed him.
" You had no suspicions no questions About her feelings for Damon? She showed nothing towards him?"
Of course Stefan knew that Elena had feelings for Damon before the bond. He had even sent her to Denver to figure the feelings out. He was sure she felt something for his brother, but he was also sure she would choose him. She had always chosen him before, despite what she felt for his brother or anyone else. And she had, she had chosen Stefan. It was obvious to the vampire that his brother was the problem.
So if it was so obvious, why couldn't Lexi see it?
"Even when I was at my worst," Stefan said, "she brought me back. She helped me. And then she chose me. She forgave me."
"She wasn't the only one who did that." Lexi said. "Even I know that. Damon was with her every step of the way."
Stefan was uncomfortable again. He had no idea what Lexi had or had not seen while she was on the other side of the veil. But he did not like her bringing up the fact that Damon had been the one helping Elena, that Stefan had forced them together.
"All true," Stefan said. "But she still chose me, after all that."
"So you lost her somewhere else along the way, "Lexi said. She didn't really agree, but was tiring of the argument. "Does it really matter? "
"I don't know, "Stefan said, then a few seconds later repeated himself. "I don't know,"
"So you're giving up" Lexi said, "just like that"
"She's made her choice, "Stefan replied." I should respect that."
"Are you going to?" Lexi asked.
"For now, I think I have to "
"So, we're getting rid of the body, and then going somewhere." Lexi said almost sounded excited.
"We?" Stefan asked.
"Hey, I am always with you. So where is it?"
"The veil ..." Stefan began.
"Please, "Lexi said. "I have skills. I'm talking to you now, aren't I? And just because you won't be able to see me..."
Lexi left her voice drop off.
Stefan looked at her little oddly, but got into the spirit of the discussion as she continued.
"So where? New York?"
"Too close."
You can take it from there, the episode did...
Things have changed around me, new job, new city. This was as much a test to see if I could still do these as an expression of my excitement with a new season a few weeks away.
Not sure about the answer. This was harder than usual. Now to figure out how to make it easier so I can play during season 5...