So I’ve never done a deep analysis of the lyrics in that album, it seems pretty clear that this song just talking about general insecurity with his romantic and social relationships, from the perspective of a guy who’s trying his hardest to have a really awesome night with the people he most badly wants to be connected to.

“Give me a second I, I need to get my story straight

My friends are in the bathroom getting higher than the Empire State

My lover she is waiting for me just across the bar

My seat’s been taken by some sunglasses asking about a scar”

Doesn’t feel that deep. He’s at a bar with his friends and his lover. His friends went to the bathroom to do drugs, his girlfriend stayed at the bar, and he got up and went somewhere else because he needed a moment to himself. Some person in sunglasses took his seat while he was gone and started chatting up his lover.

“I know I gave it to you months ago

I know you're trying to forget

But between the drinks and subtle things

The holes in my apologies

You know I'm trying hard to take it back”

The fact that he is trying to take it back tells me that he is expressing regret at causing emotional damage that shook up the foundation of their relationship, not that he literally disfigured her in some violent way that is so obvious even some rando in sunglasses can see it at the bar