Before Tristan lost his consciousness, he was able to confess his feelings for Zhen-Zhen.
{ "Zhen-Zhen, I failed you. Instead of making you happy, I am making you sad. But please wifey… don't go… don't leave me… I can't imagine my life without you…" }
He said these words because he's afraid that once he woke up, Zhen-Zhen would no longer be by his side. What if she would leave him while he's unconscious?
He couldn't stop her if that would happen. He didn't want that to happen. And lastly, he said the three magic words.
{ "Zhen-Zhen… I… love you…" }
He was thinking, what if he would die today? He still had a lot of things he wanted to say to Zhen-Zhen. But among those things, these three magic words were the most significant and important words that could summarize everything he wanted to tell her.