Sotus the series and Sotus S the series (sequel)
I've also watched other bl thai series but for me it is the best.
You should watch TypeTharn omg soo many feels there Σ(っ°Д °;)っ as well this one is called Theory Of Love soo many feels in that one as well 2moons Season 1 there's is other one called Uncontrolled Love Season 1 and . (its not thai but it's really good) as well with History 1-3 but you to watch History 3 in Kissanime.ru cuz they have 1 and 2 in youtube expect for 3 which they don't
http://www.mangago.zone/read-manga/kashikomarimashita_destiny/
I love second couple story,
You should watch TharnType and 2gether. They're both series and you won't regret it♡
Omggg thank you guyss
HEY! CAN SOMEONE RECOMMEND ME... THE BEST BL THAI SERIES THAT YOU'VE WATCHED??? ANYONE??? ლ(´ڡ`ლ)