I think Colbie is a marvelous singer, and you just always want to listen to her songs. They're like Fireflies (Owl City.) I've listened to a ton of her songs, and I have yet to find one I don't like. "Oxygen" is a great song to listen to waking up or calming down to get ready for bed.
I believe Colbie has found a boyfriend who she'll do anything for. She wants to "be his lady." She needs him and will do anything for him. Great job, Colbie Caillat!