[Both leads are virgins + sweet romance + heroine falls in love after marriage + hero has been plotting for a long time]
Always treated unfairly by her parents, Su You marries Pei Huang on a whim after her grandmother urges her to, even though they’ve only just met.
Pei Huang pampers and cherishes her, leaving her baffled.
They don’t even have much of a foundation for their relationship. She can’t understand why this man loves her so much.
Only later does Su You realize that Pei Huang had planned it all along.
In the end, this little white rabbit falls right into the big bad wolf’s trap.