Lyric discussion by The Subway Walls&Tenement Halls 

The Helena story seems to be the source of this track, but I feel that the song communicates the broader message even when you don't know about their relationship.

The gorgeous musical style of the refrain and the "just another," "time to call it a day," "last love," and the past-tense of "we came" all convey a feeling of finality, certainly felt by Keidis about the end of the relationship. However, there's also a prominent and somber awareness of the continuation of life into the future. Both sides of "maybe wrong/right" and "maybe last/first" have been felt by someone who has lived a long time and has a long time left to live. The "just another" can also be taken as a flag of continuity. That's why I really see this song by its release title and the recurring mention of the "wave." AK has felt this finality years before, but life cycles onward and once again he finds himself at just the same peak or trough as he felt before. The wave is life, and the song is, broadly, about the emotion of connecting with the feelings of your past and future selves.

My Interpretation