Marriage Contract With Two Husbands

Roselyn was married to Archduke Melchior, the first knight of the Empire.
“You don’t know me.”
“I want to save you.”
A man who saved her life, saved her family, paid off her debts, and even wants to get married.
There is no such thing as a favor without a reason, why would you do this to someone you don’t know?
“You look like someone I know.”
Melchior’s first love, said to look just like Roselyn.
When she was depressed thinking that she was just a second love for his first love, she took in Julian, who looked exactly like her husband’s childhood, as a disciple… .
“Divorce the man and marry me, Roselyn.”
What if I marry both husbands?