Oh, love is very much a physical thing. . . . I realize that it's very complicated, and I'm sure it can't be traced to individual neurons and hormones, but I think it's very much a physiological sensation that takes place in the brain.
The more important the emotion is, the fewer words required to express it: Will you go out with me? I think I like you. I care for you. I love you. Marry me. Goodbye.