For a far better explanation of New Testament love in contrast and contradistinction to other meanings of the word than I can give you, get a copy of C S Lewis's little book The Four Loves and feast on it. You'll get a rompin'-good understanding of NT love, and you'll also see why I envy C S Lewis for his clear prose and flawless logic. Everything that I've read of his treatises on true Christianity (including his Mere Christianity) is richly enjoyable edification.