Responses
10 Years Where I Loved You The Most
https://www.mangago.zone/read-manga/ways_of_parting/
This one is pretty heavy
Not all of them is cheating but:
Secret relationship
Sura's lover
Ways of Parting
Starry sky
Can you recommend me yaoi with angst like someone is cheating that will make my heart ache. If possible it is also with good art style(⊙…⊙ )