TV series
Third is a filmology major and a member of the Savage Team along with his best friends Two, Bone, and Khai, but he has a secret. Third has been secretly in love with Khai for years. For three years he has kept his.
Streaming, rental and purchase options
Checked Jul 22, 2026
Theory of Love is available to stream on Rakuten Viki in United States. Use the direct links below to open the provider.
Third is a filmology major and a member of the Savage Team along with his best friends Two, Bone, and Khai, but he has a secret. Third has been secretly in love with Khai for years. For three years he has kept his.
Choose an episode, then use the watch options above for the show.
Episode 1
Third is in love with his best friend Khai. Khai is a playboy who changes his girlfriend every week. He constantly lies and takes advantage of his friendship. Third finally figures out that Khai doesn't care about his friendship or feelings. Third finally decides to end his love once and for all but his friend Two finds out that he loves Khai.
Guest stars Wisansaya Pakasupakul, Panomrekha Potiticka, Alice Tsoi, Wasin Panunaporn
Episode 2
Two decides to help Third get Khai. Third tries to confess to Khai but fails every time. Third moves into Khai's house pretending to be broke and unable to pay his rent.
Guest stars Sureeyares Yakares, Ravipon Pumruang
Episode 3
Khai goes back to his old ways of picking up girls. Third gets fed up and decides to move out of his house but hesitated when he defends him against an ex-girlfriend.
Guest stars Sureeyares Yakares, Prapatsorn Sitthichailapa
Episode 4
Third and Khai come closer during the Student Festival with Khai. However Third finds out it was all a plan on Khai's part to find out his (Third's) feelings.
Where to watch Theory of Love
Episode 5
Third finally gives up on his friendship and love after finding out that Bone and Khai both betrayed him. He fights with Khai and moves in with Two.
Where to watch Theory of Love
Episode 6
Khai and Third try to get back to being friends. However, Khai kissed Third while being drunk and called him by his girlfriend's name. This hurts Third even more and he starts to pull away from his friends. Khai starts regretting what he did and realized that he loves Third.
Guest stars Latthgarmon Pinrojnkeerathi, Benjamin Joseph Varney
Episode 7
Khai tries to win back Third who is wary of him.
Guest stars Krit Songsamphant, Benjamin Joseph Varney
Episode 8
Khai is jealous and sad because Third now spends most of his time with a college senior Un. Khai and Third get into an argument and Khai has an accident.
Guest stars Thanaboon Wanlopsirinun
Episode 9
Third takes care of Khai after his accident. Khai confesses his love to Third in front of everyone.
Guest stars Atthanin Thaninphanuwiwat, Latthgarmon Pinrojnkeerathi, Thanaboon Wanlopsirinun, Nititorn Janruechai
Episode 10
Third and Khai start dating secretly after Third agrees to give Khai one more chance. But Third is still insecure about his relationship with Khai.
Guest stars Atthanin Thaninphanuwiwat, Thanaboon Wanlopsirinun, Nititorn Janruechai
Episode 11
Khai was kissed by a girl which Third saw. This lead to a huge misunderstanding between them. Third decided not to go on the beach trip and Two decided to accompany planning to let Bone and Khai go by themselves. At the grocery shop they run into Bone who tells them as Two had decided not to go he would let Third and Khai go by themselves unaware that Third was not going. This led to Khai waiting in the station by himself the whole day as he had promised his friends they would all go together.
Guest stars Raweewit Jiraphongkanon, Thanaboon Wanlopsirinun
Episode 12
Third and Khai reconcile after Third sees Khai's sincerity. However Third is still unwilling to take the final step as he doesn't fully trust Khai yet. Khai tries to change himself to convince Third that he is a new man.
Guest stars Atthanin Thaninphanuwiwat, Sureeyares Yakares, Thanaboon Wanlopsirinun, Nititorn Janruechai, Pinyadar Salinvarradar
Episode information updated Jul 24, 2026
Jumpol AdulkittipornKhai
Atthaphan PhunsawatThird
Nawat PhumphothingamTwo
Chinnarat SiriphongchawalitBone
Pirapat WatthanasetsiriAn
Sara LeggePhan
Neen SuwanamasLin
Patara EksangkulShane
ONE 31Thailand
GMM 25Thailand
GMMTVThailand
