
The answer is no, Hazel, you don't. You're asking a young woman you know is going to be cheated on and used by the man you want to date just so he can got back to the seemingly perfect life he had before. I don't like you but I know if Daniel didn't have power or money, he wouldn't have anything because he is a taker; he will never contribute anything to any relationship he will ever have.
For a woman who is supposed to be so knowledgeable, you are dumb as a brick to be asking another woman to be miserable for the rest of her life just to make one pr*ck happy enough to say sweet nothings into your ear. Wake the f*ck up. Drop Daniel like a used tissue and never look back. And stop bothering our MC about matters that no longer concern her.
*Huff* the nerve.

Though Jenia seems like a parroting type of kid, little kids say off the wall things all the time. Misinterpreting is part of their language learning process. Or you have behavioral copying, like the child who got into a stranger's car because he thought it was an Uber; he only ever saw the car pull up and didn't understand the difference.
What I'm saying is, our BunBun may not have said such a thing but she's running as a general rule.

"Is he even single?"
No girls, he's wishy-washy in all but his job. He's a potential train reck and one of you found out the hard way and is still hanging into the caboose.
Get over him because he's the primary fuel for your continued beef with your old bff, we haven't even see you with your kid (or only once because I don't remember how we found out you do have a kid) much less him, and if he hasn't put a ring on it, he ain't ever.
It would solve this arc with one chapter, though an apology/coffee therapy session with Jiah would be nice.

The second I heard five years, no fighting, my thought was "She gave up putting up with him." Just like the guy said she didn't remember he didn't like pork, he likely did much of the same before then. My mom has gotten very tired about all the little things my dad doesn't notice, both that she does and he doesn't notice he does.
As for the anniversary thing, it depends on how the person is with dates in general. My dad and I are great with remembering birthdays and the like while every so often when my mom fills out a form, she has to ask the day of the month I am born on.
Our couple doesn't have that problem. I wouldn't say they are fighting every day so much as they are communicating.

I used to try to remember as much as I could about my bsf and be as receptive as I could to everything she wanted to talk about. But she starting ignoring me when I wanted to talk so I did it back and she probably thinks it was equal or just me but I just couldn’t handle it anymore (we don’t talk anymore)

Everyone is a bit slimy. Kanna is straight up mental and the crown prince is giving off yandere vibes but everyone has that layer of human grime. It's both leaves a bit of an icky feeling reading the characters' thoughts but also fascinating because they feel more real than the near Mary Sues prevalent throughout this genre.
...I'll keep reading to puzzle out my feelings on it.

Okay, yes, I am staying for the story.
But can I gush for a few sentences about how they are using proper etiquette when taking their tea? Except when they studied in the library. So many comics set in this time period only pick up the cup and leave the saucer on the table and it's like getting water in your shoe to me. I'll even overlook that they don't show both hands putting down the two since I know it would look awkward on a still frame.
Just great job, author. Fine attention to detail. Please keep going.
As someone who used to work in retail, sell them! Sell the crap out of them! /small voice/ He can afford it. Mark it up!