Answer:
Heather by conan gray
Step-by-step explanation:
hes gay and he was talking about how deeply inlove he was with someone but that someone was inlove with this really sweet girl but conan hated her and felt guilty because of how much of an angel she was. (sorry i tried my best to do what u asked but im 13 and this song is the only one i truly understand only because i relate to it)