PLEASE HELP ME FIND THIS MANGA

I remember reading this one Josei/Smut manga that I really love before we got our reading list wiped, but it never returned to my reading list so I couldn’t find it back

If I remember the plot correctly the FL was framed and then banished, before she was saved by the Duke she had a crush on. He then brought her to his mansion and ‘made a contract’ with her to make her his wife in exchange for I forgot what. I remember the ML having red hair and the FL has pink hair in the cover, and throughout the story it’s then revealed that both has been yearning for each other but held back since FL was engaged to another prior to the beginning of the story. I think ML’s name was Michael or something, and FL’s name was something along Lucienne

PLEASE I HOPE I CAN FIND THIS MANGA CUZ ITS GENUINELY SOOO GOOD