So I can’t exactly remember the plot but it was bl. Bottom is very in love with the top and top knows it. I think bottom confessed his feelings and cried? When the top saw him crying he kinda liked his crying face. So if i remember correctly they started dating, so one day they were drinking with their friends, top had a genius idea to make the bottom cry, pretending to have an intercourse with a woman. Of course the bottom cried, and said things like i want to break up and the chasing starts
When seme (or male lead if it's shoujo/josei manga) regretting all the bad thing he has done (especially to his significant other) and trying to make amend of his wrongdoings. Some of the list has uke that is very forgiving, never forgive or died. I don't mind whichever ending, it's just the feeling of regret, from doing bad things or taking things for granted.
Most in the list are yaoi/shounen-ai genre, that's why I used term 'seme'. Feel free to add if you have anything similar in mind.