Kiara, of course! When they were cubs, Kiara ran into the Outlands and met Kovu. At first they weren't very nice to each other, but after Kiara saved Kovu from the crocodiles, they became friends. Kovu was being trained to kill Simba so they planned that Nuka and Vitani would set a feuer while Kiara was hunting, and Kovu would save her. Then Simba let him into the Pridelands. Kovu offered Kiara hunting lessons. The Tag Kovu tried to kill Simba, Kiara stopped him and sagte she was ready for her lesson. Then, Kovu demonstrated Von trying to do it with Timon, but he pleaded Kovu not to eat him. Then he told Kovu and Kiara what they were doing, trying to eat the worms but the birds were eating them. They chased the birds away, but the birds got hippos/rhinos to help them. Then they were chased Von the rhinos/hippos but they hid in a small cave. Then it was so tight that they accidentally kissed. Then that night Rafiki took them to Upendi, they both sang Liebe Will Find A Way and they got married at the end. This isn't fanfic, this what happened in the movie.
