I read manga almost every day did you read your manga on this site? I would be glad if you could give a little more detail was it like a black and white manga or a colorful webtoon? // I've been looking for a manga for several hours as my last hope I went into mangago and searched for yaoi I removed the tags that were not related to what I was looking for (like no harem no sports) finally showed me 79 pages I found what I wanted in about 15 minutes it may sound difficult but you should definitely try it
I didn't really get that far into it before school and now I can't find it. Here's what I remember from the summary- dude gets dumped and later moves onto his ex's brother claiming he was the one who did the dropping. The first chapter opened with the breakup and I think it was on a beach or something. The art was very nice and I think it might've been by an author who made some other popular yaoi.