His Lifesaver 4

Huangfu Ruiling didn't explain anything. He just smiled at Ye Leng'an, then turned to look at Nangong Xuyao with icy coldness in his eyes. "Young Master Nangong, I heard that you treat Ye Xiyuan so well because she once saved your life, right?"

Huangfu Ruiling's abrupt change of topic made Nangong Xuyao almost unable to react for a moment, but he quickly said, "That's right. Without Xiyuan, I might have died. She's my lifesaver." 

Indeed, a significant part of his affection for Ye Xiyuan stemmed from the fact that she had once saved him. The debt of gratitude played a significant role in why he had developed feelings for her.

Back then, when he thought he was really going to die, the first person he saw when he opened his eyes was Ye Xiyuan. At that time, Ye Xiyuan was like an angel to him.

When Nangong Xuyao looked at Ye Xiyuan beside him, his eyes were filled with tenderness, as if recalling the past.