One Direction - Change My Mind Lyrics Meaning

Change my mind is about a girl and a boy who are friends but sometimes they are more than just friends. So the boy is telling the girl he will leave if there just friends. He doesn't want to leave if he knows she'll say their more than friends (I don't wanna know I'm walking away if you'll be mine). That act more then friends like (lean in when you laugh we take photographs there's no music on but we dance along). He says he really will stay if she'll be his girlfriend (won't go won't go). He doesn't really know if they're friends or not (as I'm walking towards the door I'm not sure). So a really the guy wants to be more than friends and doesn't know what the girl wants to be though.