Guys i'm sure you've read most of them but i'll leave those i remember 'cause i re read them at times to feel better and in case u havent read it yet. Also some are tropes where the 'seme' relentlessly follow the uke.
I apologise beforehand.
http://www.mangago.zone/read-manga/unintentional_love_story/
http://www.mangago.zone/read-manga/semantic_error/
Dont forget 'Bj alex' lol the mother of all repenting semes
http://www.mangago.zone/read-manga/social_temperature/
http://www.mangago.zone/read-manga/park_hanhoo_s_manager/
http://www.mangago.zone/read-manga/chen_sheng/
http://www.mangago.zone/read-manga/keep_holding_on/
http://www.mangago.zone/read-manga/i_am_beautiful/
Again these arent strictly the 'seme regretting tropes'
But i believe, people who like that trope will like these mangas too which are HIGHLY underrated
http://www.mangago.zone/read-manga/curious_recipe/
http://www.mangago.zone/read-manga/mr_100_perfect/
http://www.mangago.zone/read-manga/keeper_of_the_pearl/
http://www.mangago.zone/read-manga/biting_the_tiger/
http://www.mangago.zone/read-manga/my_x_report/
http://www.mangago.zone/read-manga/no_love_zone/
http://www.mangago.zone/read-manga/remnant_kemonohito_omegaverse/
A warning for the next one. If u have a faint heart u might wanna prepare for this next one, seme literally had to beg to get the uke back. It's a tear jerker
http://www.mangago.zone/read-manga/life_senjou_no_bokura/
Last one's a special mention. This is a pretty old manga
http://www.mangago.zone/read-manga/hina_wa_mitsuiro_no_koi_ni_torawareru/
The way the seme suffers because of his mistakes towards the uke is 'chefs kiss'
I haven't felt THIS involved in a manga for a while. Though the current ch broke my heart, i have high hopes. I'm a sucker for the ''seme realising his loss when its too late and begs for it again'' trope. So yeah, i love the plot's progress right now, and the uke is ''chef's kiss''