Maybe this one...not too sure but I mean some of things matches with what you described so...
here-
https://www.mangago.me/read-manga/ichika_bachika/
No thanks though
I scoured every tag and list because I had a vague memory about it. (I also thought of 'Ichi ka Bachi ka' at first) I almost feel like that was too much time spent but is it this one
https://www.mangago.me/read-manga/ikisugi_friendship/
OMG YOU ARE A FUCKING GOD UESSS IT IS THIS ONE IVE BEEEN TEYONG TO FREAKING G FIND THIS FOR MONTHED NOW
OMG I WAS ABOUT TO GIVE UP OMG OMGOGMGMGMGMGKF IM ACTUALLY FREAKINGK OUT
LMAO NO WORRIES- I definitely get what you feel with freaking out
I’m trying to find this yaoi MANGA not manhwa. ╥﹏╥ ╥﹏╥I read. It was about a group of friends since childhood. They were adults and two of the guys in the friend group revealed they were a couple to one of the friends. One of the guys said he was interested in trying gay sex and they started a relationship. And it turned out he loved him for years. I’m sorry if it doesn’t make sense I’m bad at explaining please let me know this has been bugging me for days. I posted this a couple days ago and still no luck. I can’t tell you it is not Encirclement Love although it is similar. The manga I think is a bit older