I feel for this cold guy who loved the MC. Now that he is a woman can't they just be together? I know that there are 2 main reasons stopping that from happening:
1- She is a maid and he is a noble
2- She has sworn duty of protecting the woman...but he does have a duty to protect the crown as well so they might be able to find a middle ground
Of course, other reasons involve whether the MC is able to fall for guys or not seeing as he is only a woman in body but he literally died because of his love for a woman so there's that... But still, there's a better chance for that happening now than in his previous life, I believe. And having "romance" as a tag suggests the MC will have romantic interests at some point... I doubt it'll be with a woman or else we would have the "yuri" (even if he used to be a man) but also, does it need a "yaoi" tag if he used to be a man ? I hope not because I'm betting on these guys getting together. I know it's unusual for isekai to go this route but it was unusual to show the guy's interest in the MC to begin with. If it's off the table then why have multiple chapters around his unrequited love and all that ?
I'm hoping that because this manga is like a breath of fresh air, it would go down this route.