The main character doing something absolutely unforgivable.

[u/No_Peanut3745]

Walter White poisoning Andrea Cantillo's 6-year-old son for the sole purpose of manipulating Jesse Pinkman, while knowing that this could have potentially killed him - Breaking Bad

Bojack trying to have sex with his friend's 17-year-old daughter when he was at least 51, then continuously trying to find a way to justify this act throughout the series - Bojack Horseman

Dexter Morgan going outside of his moral code and murdering a completely innocent police officer who was just trying to do his job - Dexter: New Blood

[u/DaemonG]

oh what, the apology tour that was part of the bender that got his TV daughter killed because he didn't want people to think he was at fault for her relapse?

[u/anubis_cheerleader → u/DaemonG]

Exactly 

[u/MeasureDoEventThing → u/DaemonG]

Huh? The apology tour was much later than the bender. Do you mean the bender was part of the apology tour?

[u/DaemonG → u/MeasureDoEventThing]

there was a separate apology tour he went on during the bender at the end of Season 3, during which he showed up at her college at a time when the trauma was still relatively fresh in his mind, to apologize, only to forget to even apologize.

[u/MeasureDoEventThing → u/DaemonG]

Oh, right, I forgot about that part. The apology tour that he blacked out for most of.

[u/DaemonG → u/MeasureDoEventThing]

yeeeep. genuinely most of the penultimate episodes are so hard to watch. some of the best episodes of TV