The Kiss Quotient Series by Helen Hoang

Helen Hoang's The Kiss Quotient series is a contemporary romance trilogy that explores love, relationships, and self-discovery, often highlighting characters on the autism spectrum. The series includes:

1. The Kiss Quotient (2018): Follows Stella Lane, an autistic econometrician who hires escort Michael Phan to help her practice intimacy, leading to unexpected feelings.
2. The Bride Test (2019): Centers on Khai Diep, an autistic man convinced he can't love, and Esme Tran, a Vietnamese woman brought to America by Khai's mother as a prospective bride, exploring their evolving relationship
3. The Heart Principle (2021): Tells the story of Anna Sun, a violinist dealing with burnout and a recent autism diagnosis, who embarks on a journey of self-discovery and romance with Quan Diep, Khai's cousin.