Unrequited bl love

Here are a few:
1. Room to room
2. If You Hate Me So
3. Our Companionship
4. Window to window
5. Tied Up In Twins
6. Love is an illusion
7. Renai Nante Yurushimasen!
8. Sayonara game
9. Hina wa Mitsuiro no Koi ni Torawareru
10. Usagi no Mori

https://www.mangago.zone/read-manga/back_to_school/
This is a love triangle and quite sad also it contains non-con I enjoyed this a lot

Thank you for your reply but I have already read all these. Cen you suggest some more