I'd imagine many of those viewers have been watching the English-subtitled DVD of that movie. It's available at YesAsia.com. Here's the synopsis:
Billed as Thailand's first lesbian romance movie, Yes or No breaks taboos with lighthearted steps. Directed by Sarasawadee Wongsompetch, the cute youth romance about first love and opposites attract follows the popular romcom genre formula, but this time the budding, feuding couple are both girls.
On the first day Pai (Sucharat Manaying) moves into her dorm room, she almost mistakes her new roommate Kim (Supanat Jittaleela) for a guy. Turned off by Kim's androgynous looks, Pai divides the room in half and warns Kim to stay out of her life. Over time, the girls get over their differences and become good friends. But when friendship turns into something more, Pai and Kim must face themselves and their feelings for each other.
It's another DVD that was released a few months ago, but I only just now discovered it when I was rummaging around at the YesAsia site looking for other recent English-friendly DVDs of Thai movies.
The Taiwanese release has the Thai soundtrack and English and Chinese subtitles. It's NTSC format, Region 3.