I had a bad feeling last night, while I talked to you until the morning.
I continued to love for no one else, as we laughed before falling asleep.
If you were able to use magic, what kind of miracle would you wish for here?
Like a single, small lie that disappears into the back of my heart.
That said, goodnight.
---Notes---
The overall impression that the song gives is an individual who is worrying over the sincerity of the relationship they have with their partner.
In the line about the lie disappearing into one's heart, the original artist uses the "〜てゆく" verb ending, which can imply increasing or decreasing tendency as well as something leaving the speaker, in association with the verb "to disappear." This combination leads to the understanding that, in the overall context of the song, the speaker knows that their partner habitually tells them small lies, and these lies are progressively building up, yet the speaker hides them away in their heart and chooses not to address them.
The lyrics are left open-ended, reflecting that the future of the speaker's relationship is also uncertain. The accompanying transitions within the instrumental beautifully capture the anxiety and devastating emotions of someone experiencing this situation (and I will never get tired of the electric guitar).
Disclaimer: My translations are not directly translated; I try to match connotations between languages, but the overall message is similar. I am also not perfect :,) I'm still learning and open to corrections.