I know what you mean
but I think realistically the only reason the writers would break them up is if Bellarke or something else happens.
Each will be hurt and it'll obviously be tough but she's a warrior and will soldier on. She always has me if she's lonely
I'm gonna cross my fingers that any spoilers that come out about them not being together is false
I loooove Echos smile and she's just as beautiful when she's got that down look on her face