Childe thought he had fallen into a spell, and just by seeing you he felt in his chest that you were the love of his life. It was sudden but he felt the need to be with you so he always tried to get closer to you and you ended up accepting him as part of your social circle. One day Childe looked for you all over Liyue only to drag you to a jewelry stall that at first glance seemed very expensive... "They are all beautiful, aren't they my comrade? Pick one, any one, I'll buy it for you."