Always' was a promise! How can you just break the promise?" "Sometimes people don't always understand the promises they're making when they make them," I said. Isaac shot me a look. "Right, of course. But you keep the promise anyway. That's what love is. Love is keeping the promise anyway. Don't you believe in true love?" I didn't answer. I didn't have an answer. But I thought that if true love did exist, that was a pretty good definition of it.