As far as I remember, they didn't get together at the point I stopped reading, nor was it a focus at that point, and I did read pretty far; if it was, it didn't register much. One of the points I remember is when Raon called the angel a chicken or something similar, and hilariously, the angel just wouldn't let it go for some reason.
Ahh the chicken part could be earlier then that when he was facing off against the guy who killed him. Then that is much to early for that problem. Your lucky not to have seen it. I quit a little bit after during the ocean investigation for one of the clans. This is where he teamed up with the butler and the Stalker.
It's around 950's when you find out her back story, her name is Evelyn. She starts to live with Raon. She already stalks him but now she is directly involved with his life. Calling his family: mom, dad, grandfather. She just keeps pushing herself on him and he doesn't set boundaries. Maybe because he needs her but still it gets really annoying.

Reina is like a pushy Stalker. I didn't like when she kissed him when he was passed out at the party. She didn't know if he was married or dating. If a guy did that to a girl. Many people would not be happy with this action, but since she is good looking, people let out slide. Just because you like someone does not give you a right to touch them with out consent. In the ML's case he doesn't not like her, but she is forcing the issue. Just like his friend's sister, she is good looking, but he does not like her. I agree with the statements about romance in Acton stories, I don't like them. They make the man guy lose focus and the story starts to go down hill. Not for all but for most.
Right now they keep trying to force him with this girl because she likes him. Even his friend tried to hook them up with the tour and people keep saying they make a good couple. This action in stories is brainwashing. They keep saying it over and over into the other person thinks maybe they are right. I really don't when that happens. It's unfortunate that this is happening in this story.
One story a really liked had over 1000 chapters. When i was closing in on the 1000th chapter, the characters friend's started telling him he made a good couple with a crazy Stalker that tried to kill him. She was taking the form of animals and would follow him everywhere with out him knowing. She was also trying to work her was into his life through its family. It was really cringy.
Separate issue: my other problem in the story is when the ML was drunk and passed out his friend's left him there by himself passed out and the sofa. Those could not be my friend's. That was super dirt.
Thank you for reading I feel so much better.