That's exactly why its been bothering me. I too feel like the potential romances won't die... hopefully. BUT! Given that the Echo series seem to have a knack to kill some of the characters, and the fact that Sam, William, and Nick could have died on that so called bridge on the mines (although Sam did died at some point), I'd say I won't get myself too comfortable yet
real quick dont read this if you havent done echo,
in the Leo route at the end when you get on the train without him you switch between two people. both cursing echo for hurting them and there friends, one being I'm pretty sure the mc of the smoke room the other obviously being chase. and on that same note, the reason i think its the mc of the smoke room is because he says "curse you for hurting Nikolai, William and Cynthia. (and more but I don't remember the rest because I'm kinda forgetful.) so I think maybe they get injured or someone they love will get injured. but no deaths because I don't think I saw the ???/mc of smoke room state anything about someone dying. i got a save directly on that moment so i might check just to be sure.