Hidden but mutual / Mutual from the get-go (BL)

from hurlingturtles:
Sakura is a college boy with a huge crush on Yukihira, a super popular guy on campus. He tries to do little things to get his attention with no success. But one day they crash into each other in the hall and later Sakura tries to apologize but gets all flustered and kisses Yukihira instead. Seems like Yukihira knows perfectly well who he is, though...

Ruka (omega) and Taisei (alpha) are mates. They don't live together, and only meet when Ruka has his heat. When the sex is over, Taisei would hurry up and go home, and Ruka can't bring himself to ask him to stay. Story of two guys that can't be honest w/ their feelings.

from KyoZaNa✿:
During highschool Yuchen loved drawing & intended to go to an Art University. After overheard his close friend LuoYi applied to the University of Medicine though he kept wantรเ to watch him draw, made YuChen thought that his feeling was just one-sided and decided to go study abroad as his mother arranged..
Thanks to his Gastroenteritis for bringing YuChen to meet up Dr. LuoYi years later, giving them a chance to clear up any misunderstanding.

Takashi, his beloved little bro's pal, transferred to Minase's dorm. Minase is very happy to see him again, & the feelings are mutual. But Minase is perplexed, feeling nauseous at the strangest of times, while Takashi seems to be hiding what he knows about Minase's lost memories after a past accident.

from the get-go (though there's no hint til last chapter that it was)

Both brothers are twisted. The MC that sleeps with his bro's many gf to keep them from going back to him, because he so wants to fuck him, while that one sleeps around with anything human while dreaming of being ravaged by the MC.

From the get-go.

Bae Songwoo is in a one-sided love with his longtime friend, Kim Sangjin. Living his life hiding his feelings, one day Bae Songwoo finds a suspicious book in his house, and written inside is Kim Sangjin's life story.
But Bae Songwoo is just a passing extra...?!
As he tries to ignore the book, Bae Songwoo soon realises that everything is going as written...

from takame:
In a desperate move, seme locked up his crush in his own home and confessed in that situation. Funny enough, it doesn't seem like he got a captive but became a servant instead? Uke willingly staying should say something about his own feelings but our seme is too full of dispirited thoughts to guess the reason.

One night, Nijou comes across a man having sex with another man. The next day at school, he runs into him, and learns that he's Chitori, a member of the uni staff. When Chitori drops by his part-time job and they get to talking, Nijou finds himself desiring him (lucky for the secretly already smitten uke).