True love, it's like an illness. I never understood it...

True love, it's like an illness. I never understood it before. In books and plays. Poems. I never understood what drove otherwise intelligent, right-thinking people to do such extravagant, irrational things. Now I do. It's an illness. You can catch it when you least expect. There's no known cure. And sometimes, in its most extreme, it's fatal.