Ginny is Ron's little and only sister. She had a huge crush on harry right to the very end. In the sixth book/film Harry realises he too has feelings for her and starts to get jealous of her boyfriends. Ginny stood by Harry's side as both his friend and his lover and faught for him right until the very end. Ginny had 3 kids with harry after the war had finished named James Sirius, Albus Severous and Lily Luna.