The protagonist plays the part of the villainess(brunette with sword on cover) and both the heroine (blonde on cover) and the protagonists butler(blue haired guy on cover) fall for her and think she is in a relationship with the other.
The FL has been in relationships with a few men, and one of the stories she works with a woman, and it may not be the most obvious but their relationship was very close and I think the woman probably had/has feelings for the FL.
The former villainess loves her husband and expresses attraction towards the FL. The FL also expresses attraction to the former villainess, as well as the ML.
The FL's sister, who features a fair part of the story herself is bi/pansexual. It does play into the flirty bi trope at the beginning but I think its a decent story, especially because same-sex relationships arent really played for a joke from what Ive seen.
The "villainess" held feelings for the prince and later falls for the FL. The FL also seems to love both the ML and the "villainess." I've found the story really enjoyable so far!
FL Attracted to both ML and his Sister. Good for her, Good for her!
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I have not yet! Thank you for the suggestion and I will look into it!
Have you read The villainess' pet? I think it would really fit this list perfectly