Yes, they got married, but he was very lame as a husband I'll be honest, made her depressive and she had to take sleeping pills because everytime something good happened to her he didn't even congratulate her etc... He made her really unhappy and if her support system wasn't his family I honestly don't think they would've gotten back together. Honestly I hate him, and I'm very happy it isn't tagged as romance (last time I checked) because it isn't.
I think the author did a good job at clocking his shit bc he used to do dumb stuff and then make excuses and his mom or his aunt would tell him it's wrong (and he would do it anyway) but at the same time author romanticized a little bit. Imho.
I read the novel... And yes they got back together. She just said 'I want a divorce' then he stayed outside her house all night (womp womp it rained) then he cried a little bit and they got back together. Mind you he didn't even change, still a shit just better at hiding it (it said so in the novel)

I hope Olivia succeeds without any help from a man but from every woman she will meet and support her. Like Marguerite. I'm not particularly liking the ML yet but I don't want him turning like a knight in shining armor for the sake of the plot.