1, Li Bai wrote poems for Yang Guifei because Yang Guifei is a national idol, not because of love.
Li Bai wrote many poems to Yang Guifei, but none of them revealed Li Bai's love for Yang Guifei, only admiration. But Yang Guifei is a national idol, and everyone likes Yang Guifei, so it is normal for Li Bai to appreciate Yang Guifei and write poems for her. Poets stress that they can express their feelings at will. I can't see Li Bai's love for Yang Guifei in his poems.
Li Bai is a conceited person, and few people like him. Yang Guifei is not among them.
Li Bai is a famous wild poet. He has always loved mountains and rivers and never loved anyone. Although Yang Guifei was excellent, she didn't make Li Bai crazy. He wrote poems for Yang Guifei because of the emperor's request or the pursuit of beautiful things, but not love.
Yang Guifei is the emperor's woman, and Li Bai won't like it.
It's a big mistake to like concubines If Li Bai likes Yang Guifei, he will be trapped by love all his life. But Li Bai has never been depressed in his life, and he can't see how he was trapped by love. Therefore, I don't think Li Bai has ever fallen in love with Yang Guifei.