Dean had patted his shoulder in that familiar brotherly gesture of comfort, of 'it will be okay'.
He fleetingly looked at Sam, his eyes full of understanding and a promise to be back. But Sam knew better.
As much as part of him wished otherwise, his days of adoringly believing everything his brother promised as the truth were over. He saw the promise as what it was, his brother would do everything in his power to get back, and Sam truly believed that, but his safety wasn't a given. There were factors out of his control, monsters and people who could try and hurt his brother in the apocalyptic world and stop him from coming back in time… or period.
Sam swallowed hard. He managed to lift his gaze and meet Dean's while he was ready to step into the rip. Worried, sad, full-of-love puppy eyes borrowed into the elder Winchester's as the younger gave him a nod. His heart expanded the way it always did when his little brother gave him that look.
That nod screamed one thing.
I trust you.
Please come back.
Dean looked back at him with even more resolve.
I promised, his gaze said back.
Because Dean Winchester would never break a promise to his little brother.
Especially when his brother needed him.
If Sam wanted him back and if he was willing to trust him to do everything in his power to return, he would damn well make sure to do so.
And with that last thought he stepped into the rip.
This is my first fanfic posted here so I hope you enjoyed it! Constructive critisism is always welcome!:)