It could be about a relationship with no important meaning at the beginning, someone that she is starting to know but she just want companionship, obviously because she is feeling lonely and want to pretend she has something special with someone, but at the end this relationship start to mean something to her, she doesn´t know what to feel about it because she wasn´t so into it in the first place but now that she knows him better she feels this could be someone that she really cares but is too late the person who she was with is now leaving...
Or she is at the beginning of a relationship and she is feeling the infatuation of it but she knows that she has not valid reasons to believe is more than that, she doesn´t know him well yet and the infatuation is going to end at some moment (as always does). But when the other person has to leave, she feels that the feeling of love is justified because she knows him enough to feel she could really care about him, but of course, he is leaving. (maybe this song should call "Leave" rather than "Leaves" - maybe they were thinking on the plural form of the word. English is not their mother language. Who knows.
It could be about a relationship with no important meaning at the beginning, someone that she is starting to know but she just want companionship, obviously because she is feeling lonely and want to pretend she has something special with someone, but at the end this relationship start to mean something to her, she doesn´t know what to feel about it because she wasn´t so into it in the first place but now that she knows him better she feels this could be someone that she really cares but is too late the person who she was with is now leaving...
Or she is at the beginning of a relationship and she is feeling the infatuation of it but she knows that she has not valid reasons to believe is more than that, she doesn´t know him well yet and the infatuation is going to end at some moment (as always does). But when the other person has to leave, she feels that the feeling of love is justified because she knows him enough to feel she could really care about him, but of course, he is leaving. (maybe this song should call "Leave" rather than "Leaves" - maybe they were thinking on the plural form of the word. English is not their mother language. Who knows.