Constantly Switching Between Villainess and Supporting Lady

Gu Yisheng spends every day worrying about how to convince her girlfriend she hasn't cheated. Cheng Jingyan transmigrated into a book. She woke up to find herself the ex-girlfriend of the female lead's ship partner in a girls' love novel, a vicious supporting character who constantly picks fights with the female lead and her partner and causes trouble at every turn. Cheng Jingyan: ???? Are games not fun? Are novels not good? Is stanning celebrities not exciting anymore? Is your anime waifu not cute? Why chain yourself to the female lead's ship partner? With a fortune waiting to be inherited, why would you do something so ridiculous as hide your identity and fake an injury to win sympathy? With parents who love you to bits, why suddenly have an excess of pride and insist on making it on your own? Cheng Jingyan thinks this is all ridiculous. Since she's already the ex-girlfriend, she might as well go home and live off her parents. Who would want to fight the female lead over some walking red flag? Gu Yisheng is fabulously wealthy, elegant, fair-skinned, beautiful, and long-legged. She's a renowned ice queen in the CEO circles, keeps herself above reproach, and is everyone's dream girlfriend. But Gu Yisheng is trying to explain to her girlfriend: We only had a fight. We didn't break up! Cheng Jingyan: ??? If we don't break up, how will the plot move forward? Is this a case of, don't lower your head or your green hat will fall off? The reborn female lead: ??? Where's my ship? Where did my ship go? Weren't you supposed to get a ship along with your rebirth? ★ No logic, just a satisfying, feel-good story. The leads like each other mutually from beginning to end, and no one else gets between them.