On May 19, Abernathy, 28, posted a clip of himself performing his then-unreleased song, “Married in a Year,” in the middle of a crowd at Los Angeles’ Moroccan Lounge.

I am definitely scared, or fearful. There’s just so much unknown that comes with it and that unknown is scary. But really bluntly, I’m also very optimistic and hopeful. I believe in “Married in a Year ...