That was the TL fucking up the translation. It went from "What's bothering you?
![Frown :( :(](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
" to "I'm so glad you'd get jealous over me! The way you felt when I was straddling him is the way I feel when you breathe in another woman's direction!"
Literally riding your "supposed lover" best friend isn't the same as just talking to another girl
Bonus point for her dialogue line straight up from a ntr doujin
She didnt even apologise or explain the situation it was subaru who did it
Honestly she was totally acting like a bitch ,she know the mc got low self esteem you don't do that to a guy like that
Next time what ? she's gonna ride the neighboor because he smiled to another girl maybe?
And now that the author successfully sweeped the probleme the mc magically forgot and can't talk her out of her behaviour
Just a 'hey luna i don't like you acting like that to other guys can you maybe stop "would have been sufficient even if this is stupid because for a girl 'head over heels" for the guy it should be natural