Flip-flopping doesn't mean a roundtrip. It means switching back and forth as the wind changes.
Remember that old saying, "Insanity is doing the same thing over and over and expecting a different result"? Any candidate running against Lightfoot could use that bit of wisdom to their advantage.
As for Paul Vallas, he did a good job in the positions he once held in Chicago government, meaning that he would know how to navigate in the entrenched Chicago bureaucracy.
Really? We'll meet someday? Presumably after we're both dead? How can anyone actually believe this? By the time I'm ready for this celestial hook-up service, there'll be eight billion people on this planet, and I'll probably have the opportunity to meet maybe a few hundred, or if I get famous, a few thousand of them. What if my special person gets re-born in Afghanistan, while I, of course, return to Chicago? Worse yet, what if, by that time this other person's already found a whole new circle of friends, all of them wittier and more interesting than me?