Lyric discussion by DAREtoBOOGIE23 

Cover art for Between Two Lungs lyrics by Florence + the Machine

To me, this song means the feeling of euphoria after your significant other finally tells you that they love you. Up until this point, it seems as though the fact that they weren't expressing their love for you was distressing you for a long time. Now that they released their feelings for you (the breath and words that had been blocked up between the two lungs) has had a blissful effect on you. You experience feelings of enchantment, floating and flying freely (the full love effect). You have all those incredibly happy feelings running through you and your veins. Finally, you get the confidence and excitement to finally express your love for him (now that you are fully knowledgeable on the extent of his feelings for you), which will finally complete the intensely passionate exchange between both of your lungs and lips (virtually both your hearts and soul). I absolutely love this song. Everyone who has been in love knows perfectly well how one would feel in this situation =D and those who haven't, it is an experience you must have, even if you get hurt in the end. Love, it's the purpose of life.

My Interpretation