I believe this is about a guy who used to date a girl, but they weren't exclusive, and he didnt really feel like she was worth pursuing a relationship with. Hence "I never understood what was at stake, never thought your love was worth it's wait". But then she leaves because she met someone else, he confesses he made a mistake and that he wants her, but he is just a burden to her now. Like he once saw her. So now he wishes he would've just let her be. Because he is complicating her life and her happiness.
I believe this is about a guy who used to date a girl, but they weren't exclusive, and he didnt really feel like she was worth pursuing a relationship with. Hence "I never understood what was at stake, never thought your love was worth it's wait". But then she leaves because she met someone else, he confesses he made a mistake and that he wants her, but he is just a burden to her now. Like he once saw her. So now he wishes he would've just let her be. Because he is complicating her life and her happiness.