I believe it does not matter if it's from a guy's or a girl's POV, or if the person that looks a lot like her is a man or a woman.
I believe that when we are in love with someone, we end up absorbing some aspects of his or her personality, we form a connection with that person, and I believe this is what this song is about. In that specific situation, the singer sees the person her lover is in love with reflected on his/her face, metaphorically speaking.
I believe it does not matter if it's from a guy's or a girl's POV, or if the person that looks a lot like her is a man or a woman.
I believe that when we are in love with someone, we end up absorbing some aspects of his or her personality, we form a connection with that person, and I believe this is what this song is about. In that specific situation, the singer sees the person her lover is in love with reflected on his/her face, metaphorically speaking.