They cheat on their taxes and other finacial stuff and brag about it. I find that people like this generally don't think rules apply to them in many areas of their lives.
Yes! This. I found out after almost a year together that my ex just din't file taxes. Uhhhh! Because rich people use loopholes, why should he be one of the dunces just going along and turning over their money. Padded by a lot of justification about not liking certain government spending. I freaked. out. about this but I was in lurve so just made him promise to see a tax attorney.
Any kind of not wanting to jump through hoops that we all have to jump through is a bad sign to me now. Yeah, paying bills and applying for passports is kinda boring, guess what, you still have to do it instead of waiting until the ultimate last minute and with panicked prodding from your SO.
Similarly, their responsibilities to friends and family are THEIRS. If they don't take initiative in those areas, think about that.
Any kind of disdain for the rules of society, any intense focus on success, judging others who play by the rules or choose not to take a route in life focused only on material success and power.
Intense sexual jealousy about your past. Sigh. #whatwasithinking
Few close friendships. Will disparage those they are moderately close to.
Love bombing, as others have said.
Kind of a tj, but for red flags on women, I hope independence and accessible sexuality can sometimes be good signs! Though I know we all are working from different values/needs.