as much as i would love to see them in love i also wanna point out lu feng genuinely believed there was something off about an zhe thus did a genetic testing and he underwent 30 days of checking up on him because no xenogenic can hide for that long (well obviously he doesn’t know that an zhe can). there are so many other better representations of their affection of one another

It was love for Lu Feng the second he saw An Zhe. His intuition and his heart were battling at that first meeting, that's why he ordered the genetic testing done. He wanted to appease both sides of himself. Then he kept "coincidentally" crossing paths with An Zhe basically to make sure his claim on him was known to all.
Change my mind!!