Deliver Thine Only Once

Jesus continued to illustrate His raw feelings by referring to killer beasts to describe the predators around Him. One of those was a unicorn. That means a one-horned animal. They are generally thought of as mythical but it may have a rhinoceros-like animal or a rhino itself. He also made a significant reference to my darling. Literally, that means my only one. Is that a way of pointing to what He would say in John 3:16?