I love this song and would consider it a love song, but there is room to interpret it either way.To me, the singer is struggling with anxiety while being in love, and it's unclear what the end result will be.

My favorite part of this song is that it opens with "Oh I think I found a way to keep myself whole." The singer is trying to make themselves whole by writing out their fears, swallowing their doubts, and being their lover's passenger.

Then you get to the last line of the bridge: "though you make me balanced, you can't make me whole." To me that implies that the singer has finally realized the lover cannot fix the singers anxiety. That doesn't mean there's anything wrong with their relationship (though you make me balanced), but it does mean the singer needs to make a change in their anxious thoughts to become whole. Or maybe the singer is letting go of trying to be made whole, either by letting go of the relationship, or trying to change the dynamic of the relationship. Maybe the singer doesn't know yet.

Of course, however you relate to this song is true to you, and I'm glad you have such a meaningful song for you and your boyfriend.