It's concerning, the way she knows just out to position her body to let him calm from the touch. Or at least it would be if Bucky had time to think about it. Instead that explanation hits him like a ton of bricks. Face staying surprisingly neutral but giving little hints that his brain is processing the rapid amount of new information and trying to keep composure.

They were on Vormir together wherever she was from. The idea that he chose to be the one to go over that cliff doesn't bother him nearly as much as he would have guessed. Of course he would jump, he's the one here with no family, no friends, no life. Quite frankly he probably would have been happy to do it in this world as well.

"I'm sorry you lost him..." he mutters because what else do you say about that and turns to his freezer to dig out the bottle of vodka before reaching for a couple of rocks glass in the cupboard. He keeps his back turned to her because this all starting to quickly all become too much and he can't even put his finger on why.