@ayna17 same, same!!! Fei Yue is my fav (lmao, at this point all of them are my favs but Fei Yue is my ult bias), I understand he's doing selfish things (which btw I don't blame him in this case, it's super understandable to be afraid of your wife falling for other guy and we don't even know Bai Yu's full story yet) and that he's still hiding things from the MC, but I hella trust and believe on him (plus she understands, she understands why is he doing the things he's doing and what his position and his background is, she understands that maybe at some point he'll do mistakes but despite that, she doesn't judge him. She's just waiting for him to be brave enough to love and fight together against the world and that's awesome!).
The man literally loves her to the core, not just because of their story in the past but because who she is now. He's ok doing all the consort work, welcome other concubines and more! His relationship with the Crown Princess it's the exact proof of that, he's just entangled with her because of his mother, but he was abused and forced on that aspect. And tbh having that relationship was awesome, even if some people may think he's betraying her, let's admit that in the past the 3rd Princess didn't know how to protect herself, nor anything, so keeping that relationship was the only way to keep her alive and I'm greatful for that.
So what if he's hiding Bai Yu's identity? He already did everything else at his best! He's willing to give up everything for her except that and I totally understand it. In fact, it makes me feel more at ease that he's that way, because it means he cares about himself as well and won't be an eternal pushover. It's exactly that strenght that will make him stand against his mother, the 2nd Princess and the Empress.
Fei Yue is already too good, it's ok to have faults (I looove that he's not perfect and I love that he's complex and has different layers, because that's what give us the chance to see real and human characters plus a good character developement). She eventually will discover everything and I'm pretty sure that, just as before, Fei Yue will still be the one who holds more weight on her heart. He just needs to make a decision, to fully take a side and I bet she'll give him the world and her heart (she's gonna do it anyways, but if he takes completely her side, she will finally love him in the way he deserves).
Edit: I'm not against the white bunny per se but his story is so blur to tell, especially because there's no way to know who he was before the adoption. He's interesting but he's suspicious as well. I welcome him into the harem if he has the chance and if he is a decent guy, but certainly I feel he'd be the most likely to be the betrayal in the original's Yan An's life. But yeah, whatever, definitely Fei Yue is the #1 for me! uwu
Edit2: oh yeah, but wtf with the 1st Princess, she's a 🐍