
SPOILERS
According to me, Unlike Lan zhan who prolly fell in love with wy quickly and very deeply wy fell in love with lz slowly. Before his reincarnation wy never thought of lz as a love interest however after he came back he originally started his clingy behavior to annoy lz but slowly fell in love but was in denial cause he didn't have the cave memories so he never guessed that lz liked him back. It's evident from the way wy initiated the kiss when lz was drunk, the occasional flirty looks and blushing etc and then in the future there's a bath scene where they were explicit for the first time and guess what? Wy initiated it...however he was in denial that it was love so when it was finally revealed that lz did love him he broke free of his denial and confessed and loved him dearly. We can say his love was natural...just naturally he fell in love slowly and steadily till he was madly in love.

In his previous life he was so occupied with other incidents he didn't have time to think of romantic feelings.and He's just too dense and in his previous life he always thought Lan Zhan hated him.
So after he reincarnated he had enough time for his feelings to be developed.
But He had always admired and respected Lan Zhan,he had some kind of feelings in the past even unknown to him.
If you read the insence burner chapter (an extra chapter) you can see how he dreamt of Lan Zhan in his past life and in that dream they were like a married couple,a really sweet dream!
Can someone just describe wei ying's love for Lan Zhan to me? I have always heard of lan zhan's love for wei ying. I just want to hear how much wei ying loves lan zhan. This question is for the novel readers.