Catch a Tiger by the Toe

What happens when the Prince of Puzzles pilfers a kiss from that Purrloining Pussycat? Well, she steals it back, of course! Along with anything else that's not bolted down. Including the Riddler's poor, hopeless heart. Conundrums come easy to Edward, but this one has him baffled. How can he get that fickle feline to love him back?