I married an abuser (physical and verbal). He also went on to abuse our child (intense exercise/withholding of food for 10+ hrs, verbal abuse). Red flags during courtship I ignored:
1. Super fast courtship (wanted to marry in less than a month)
2. Got drunk at restaurant on second date
3. Made vulgar jokes
4. Was fixated on my family's financial situation (ability to generate income/wealth)
5. Insulted my grandfather who he had never met (called him an "old jew" even though he was a lifelong old world Catholic)
6. Wanted me to talk to his family on the phone (who I hadn't met yet) to prove I was real "so they won't think I'm a fαɢɢօt").
It should be noted I was not a Christian at the time so I didn't have faith and morals to guide me. The biggest factor in why I married someone that I already knew was not a good man--my father had been a violent drunk and by comparison I thought I could handle this guy.
While I do not want to make light of your situation, are you the unfortunate individual who got stuck marrying Croix?
Seriously, however, that's one of THE most common mistakes people, most often women, make. Here it's not that you didn't see or recognize the red flags, but you dismissed them with the belief that you could CHANGE the guy. So, red flags is an understatement with this guy ... and it looked more like one of the blinding emergency vehicle sirens. That's actually a very common impulse of feminine vanity, where you believe that YOU had the power to change such an individual. That's known to be one of the reasons that serial killers in prison get dozens of marriage proposals, where female vanity drives many to think that they had the feminine power, almost divine, to transform a serial killer into some kind of saint.
Bottom line is that, barring some divine intervention, it's very rare for individuals to undergo fundamental change, in terms of their personality, their temperament, their character. Now, they might be able to tame it, but THEY have to want to change, and if THEY do not want to change, no amount of feminine wiles will be able to overcome that. Sure, they might be able to hide some of these impulses a bit early on ... but then as soon as the initial infatuation has worn off, it'll all resurface, often with a vengeance.