Yall... im not defending no one here but... the ml has several trauma/trust issues and he's portrait by others as a very bad guy, so, even tho she was drunk, ofc he was trying "his best" to get her to love him. From his past that we saw, he didn't had a very lovelly home, so he does what he thinks will keep her close. Because, let's be honest, it was the first time that the dude got kind words from someone. So by threatening her it was a way of securing the only person that showed him some affection.
For the fl, she has trauma and issues too.
Both are damage.
None of them can be true to each other because they don't know best.
So yeah.
She only knows the side of him that she read from the book, and let's be honest, he only shows a different side when she faked her death.
And she only showed him her true side when he pushed her away.
Both have problems to overcome and they will come to a true eventually.
Dont hurt me now, but for the drunk sex, from reading it again, she did allow it to happen... it got foggy the next day ofc, but to increase the drama and her guilty of "stealing" him from the original mc. And him being the "please dont leave me" threatened her... cuz he stupid ofc... but still, dont hurt me ;-;