Oooh where can I find the raws? And I'm shocked lol usually when a guys says he's straight in a yaoi he aint straight for long.
you can find them here: https://www.lezhin.com/ko/comic/lovemore
also from the look of it i'd guess he's bi XD
did who cheat??? it was the new character/the neightbour who had sex with a womanXD
i can't understand korean so idk if it was his girlfriend, a girl he cheated his lover with, a sex friend, a onenightstand or whatever... to me it didn't look like a flashback but i can't say for sure that it wasn't having not understood the text^^'' sorry^^''
i love how in the comment section everyone is like "the straight gay is gay as fuck" while i'm sitting here having seen a sex scene between the "straight guy" and a woman in the rawsXD