do you guys think "im with you to the end of the line" started being a vow for them when they were really really little. like how does that come up organically.
option 1) steve and bucky met as little kids out playing somewhere away from brooklyn (like maybe their moms both decided on a day trip to central park at the same time), took the subway home together, and got really excited to learn they got off at the same stop! "i'm with you to the end of the line!" was initially an excited little kid going yay yippie we get to hang out the whole way home! it morphed over time into a promise that's partially a reminder of just how long they've been there for each other.
option 2) bucky said this to steve when they were both very young, the first time steve got really really sick. deathbed sick. and steve's really out of it and everyone is trying to get bucky to leave- he's too young to see this, to see steve die, especially in such an awful slow way. and bucky is too young to really know how to say "i'm not leaving him to die alone, he's my best friend, and if the only thing i can do is be here then that's what i'm going to do" so instead he said the closet approximation an 8 year old has of that. you can't make him leave. he's staying with steve until the end of the line.
