She has made it abundantly clear that they are not dating. Adult life is messy, and she obviously had strong feelings for this ex-boyfriend. So strong that she is having regular sex with a guy who happened to live in the apartment they used to share. She isn't doing well emotionally and probably...
To any young people out there getting into romantic relationships: if your partner treats you like he treats his wife? Dump them immediately. He's a manipulative asshole. Don't put up with bullshit just to be in a relationship. You deserve better.
Neglectful parents are awful. Just because you don't hit your kid doesn't mean you aren't being abusive. That mother needs to be starved a bit and see how she likes it!
PSA for chapter 27: Do not soak your newly painted nails in ice water. It only gives the appearance of being harder and will actually take longer to dry. Let the polish dry normally and invest in a quick-dry top coat.