What is it like to be in LOVE with someone?

To that I would say, Loving HER is something which is not a pre-teen puppy love, an unvoiced crush, or a hollow lust, but LOVE. A LOVE that is all encompassing – that agonizes and wounds and exalts and heals. A LOVE that connects you to another soul . . . and, through them, to the universe. A LOVE that raises you to immortality. A LOVE that lets you, if but for a moment, "slip the surly bonds of earth, to touch the face of God." (Well, that part I am not totally sure of, just felt

Can you really describe it or can it only be experienced to be known? Can any words illustrate it? Save you will know it when you feel it, nerves to bones?