Archive of Our Own (AO3) is also a great place to look. It has a large collection of fanfics from various fandoms, including Naruto. Just search for 'sakura teasing sasuke' and you'll be presented with a list of available fanfics that match your criteria.
You can try fanfic websites like FanFiction.net. There are tons of Naruto - related fanfics there, and you're likely to find some great 'sakura teasing sasuke' ones by using the search function and typing in relevant keywords.
Some Naruto - focused fan communities or forums might also be a good source. Members often share and recommend their favorite fanfics. You could join a Naruto fan forum and ask specifically about 'sakura teasing sasuke fanfics', and someone is bound to point you in the right direction.
Chapter 175, "He Tampered with the Food", is the clearest early answer because it turns Shu Yan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Wen Jiaojiao's eyes nearly rolled back into her head.
Chapter 311, "Signed Jiang Yan", is the clearest early answer because it turns Shen Lan's situation into a concrete plot event. The chapter gives readers a real answer by opening on Shen Lan knocked on the door before entering when Jiang Li was...
Chapter 396, "The Shang Family Now Follows My Orders", is the clearest early answer because it turns Shen Lan's situation into a concrete plot event. The chapter gives readers a real answer by opening on Doomsday Beehive" featured a male supporting character who was...
Chapter 207, "Keep these thirty points for yourself, I don't need them", is the clearest early answer because it turns Sister's situation into a concrete plot event. The chapter turns that into something concrete by moving from After finishing, Sister-in-law Lan quickly took out the Good...
Chapter 368, "You Don't Deserve to Be My Mother", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. A useful checkpoint is the way the scene starts with I haven't detained anyone, how could I possibly detain him?
Chapter 190, "Aren't We Friends?", is the clearest early answer because it turns Miss Jiang's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Several people who didn't understand fell silent.
Chapter 250, "This Jiang Li is Definitely Doing it On Purpose!!!", is the clearest early answer because it turns Xiao Xueyi's situation into a concrete plot event. The chapter gives readers a real answer by opening on The knowledge that several guests were soon returning had fans...
Chapter 548, "A Guy Named Gu Yu", is the clearest early answer because it turns Now's situation into a concrete plot event. The chapter gives readers a real answer by opening on No, we can't," Su Yinwan blurted out subconsciously.
Chapter 141, "The Recruitment Contest!", is the clearest early answer because it turns Wen Jiaojiao's situation into a concrete plot event.
Chapter 119, "Wen Jiaojiao is Poisoned!", is the clearest early answer because it turns Xiao Wu's situation into a concrete plot event. A useful checkpoint is the way the scene starts with What is Princess Wen talking about?