Gap: The Series (Thai: ทฤษฎีสีชมพู; RTGS: Thritsadi Si Chomphu; lit. Pink Theory) is a Thai romantic comedy television series that premiered on Channel 3 and the IdolFactory channel on YouTube on November 19, 2022, and ran until February 11, 2023. It stars Sarocha Chankimha and Rebecca Patricia Armstrong. The series was adapted by Devil Planoy (เจ้าปลาน้อย) from the novel of the same name, directed by Nuttapong Wongkaveepairoj, and produced by IdolFactory. It is the first GL series that brodcasted on Thailand's national TV and surpassed 600 million views on YouTube within one year of its release.

The show garnered widespread fame internationally and multiple awards for its two leads, Freen Sarocha Chankimha and Becky Rebecca Patricia Armstrong, who became known as "FreenBecky".