Atlas pulled on Caspian's hand before he left and asked:
"What's wrong?"
He could tell he was angry and so did the viewer at home. Caspian laced their hands and looked at it for a long time. Atlas took a step closer and lifted his head, so he would look at him.
Once he did, Atlas frowned as he tried to understand what was going on in his head. He could tell that he wasn't just bothered because of what happened before, but something deeper.
Caspian gazed at him and asked:
"You've never loved Stellan?"
When Atlas said he originally didn't come to win, he saw Stellan's smug smile. He doesn't want to be a replacement for him. That's what he's been his whole life, he won't do it again, especially with Atlas.
Even if it's crazy, he feels in his soul that they are meant to be, and he'll never let go of them. Even if to Atlas he's just a rebound he won't. Still, he wishes he wasn't.