I don't think this is so much about a lover leaving her, but more, she's met someone who's already in a relationship. I think this guy is probably a bit confused and lost and not the happiest person himself. Although it may not be satisfying or he may not feel that strongly for his girlfriend, the relationship is stable and comforting. So when he meets her (the singer of the song) he puts up his defences even though he has feelings for her, because he's scared of the unknown, scared of leaving his girlfriend for something more uncertain. He does it because he's scared of being hurt, but she knows she'll protect him and she wants him to realise it too. She's unhappy and feels alone in the world, and he knows it, yet he still goes back to the security of his current relationship, believing that that's where he should be, and leaving her alone. He's confused (life is tangled) so he tries to hide himself, hide his feelings, put on an act, and she wonders why, because she knows she'll always be there for him. She tries to show this to him, but still he goes back to the security of his current relationship. And maybe for a second he thinks about being with her, but then he goes back to his current relationship, not ready to take a chance.
So basically, it's about someone trying to get another person to take a chance and have faith in them, but the person never will.
I don't think this is so much about a lover leaving her, but more, she's met someone who's already in a relationship. I think this guy is probably a bit confused and lost and not the happiest person himself. Although it may not be satisfying or he may not feel that strongly for his girlfriend, the relationship is stable and comforting. So when he meets her (the singer of the song) he puts up his defences even though he has feelings for her, because he's scared of the unknown, scared of leaving his girlfriend for something more uncertain. He does it because he's scared of being hurt, but she knows she'll protect him and she wants him to realise it too. She's unhappy and feels alone in the world, and he knows it, yet he still goes back to the security of his current relationship, believing that that's where he should be, and leaving her alone. He's confused (life is tangled) so he tries to hide himself, hide his feelings, put on an act, and she wonders why, because she knows she'll always be there for him. She tries to show this to him, but still he goes back to the security of his current relationship. And maybe for a second he thinks about being with her, but then he goes back to his current relationship, not ready to take a chance.
So basically, it's about someone trying to get another person to take a chance and have faith in them, but the person never will.