The Putong Mystery Files (Volume One)

In a Serious Reading Slump, Looking for Recommendations

I'm looking for books similar to Roses and Hymns (The God of Love Has Chosen Her). Any recommendations with smart characters and good writing, where the leads choose each other? The heroine shouldn't be shy, and the hero shouldn't be a playboy who turns over a new leaf or a delinquent. Historical, modern, school-life, or cultivation novels are all fine.