To be fair, her saying he was "her best option" implied that if there was a better option than Harsen, she would have chosen that. So Harsen keeps getting hurt because he's basically jealous of that "better option" that at least doesn't exist, but would've had the power to take her away...
Basically, he's a coward, hiding behind his pride 🙄
And Ercella was first too naive and now too oblivious to understand his problem 🤷♀️
Boy, they are adults but they make me wanna slap them silly 😒