(Reunited after years apart + heroine falls in love after marriage + hero has been plotting for ages and works hard to win her back. Both leads have pets. Fictional setting, and neither has been with anyone else.)
To inherit the estate, she is forced to get married by the end of the year!
Tang Xuelian grits her teeth and says to her former high school deskmate, Qi Simo, CEO of the Qi Group, “Why don't we have a fake marriage? We won't interfere in each other's private lives.”
Qi Simo smiles. “Sure.”
After they get their marriage license, he pulls out all the stops: flowers, private venues, and a proposal.
She finally snaps. “We agreed to pretend!”
Qi Simo calmly hands her a document. “I've just started a new company. I'm transferring the shares to you.”
Tang Xuelian takes one look. Isn't this the biggest investor in their company? “...When did you start this?”
“Probably the day you agreed to marry me. After all, this makes the perfect wedding gift for you.”
Only later does she realize that this fake marriage was a scheme he had planned from the very beginning.