Responses
Try the 1st story of "Koakuma no Sanctuary". Might just be your thing. And I am assuming you have already read "Overdose". You might also like "Hageshi Ame" but there, [SPOILER ALERT] it's the uke who dumps the seme, bcz of his cheating.
I would to read a manga that has a plot which the seme dumped the uke, but the seme regretted it so he went after the uke.
Bonus: I would also be very happy to see the uke with someone else besides the seme and the seme is devastated.
I would like a happy ending... but I guess i can deal with a few tears and go along with tragedy...