I doubt it means he's cutting himself I bet I'm wrong but I'm pretty sure that he's never written about cutting himself before I think that MyLoveDecays was on to something in the sense of "he's cutting her out of his own heart so it's seamless" he doesn't want her to be with him anymore and the place she figuratively resided was his heart. he's using the literal to describe the figurative. it's a common lyrical tactic.
I doubt it means he's cutting himself I bet I'm wrong but I'm pretty sure that he's never written about cutting himself before I think that MyLoveDecays was on to something in the sense of "he's cutting her out of his own heart so it's seamless" he doesn't want her to be with him anymore and the place she figuratively resided was his heart. he's using the literal to describe the figurative. it's a common lyrical tactic.