I don't see how the song could be about love growing or getting better when there are allusions to a fight just having occurred, with the "she" in the lyrics "trying to cool down" at the sink. Another clue for the fight is the opening spoken word piece, the "problems that disturbed you in the past". The life that is now seething in the tub I suppose is the fruit of the fermentation process, the bacteria growing (I really don't have much of an idea how the process works specifically, so don't take my word for it).
I don't see how the song could be about love growing or getting better when there are allusions to a fight just having occurred, with the "she" in the lyrics "trying to cool down" at the sink. Another clue for the fight is the opening spoken word piece, the "problems that disturbed you in the past". The life that is now seething in the tub I suppose is the fruit of the fermentation process, the bacteria growing (I really don't have much of an idea how the process works specifically, so don't take my word for it).