would be lowkey dying and she would be so so happy. maybe will mess up the dance a bit because of the pressure, but don't worry!!

she would be so happy seeing you backstage after the concert

would be really embarrassed but would still slay because she is a goddess. also!! lot of intimidating eye contact during her performance, making you flustured.

make sure to shower her in love

would be so extra if you pay attention to the other members bad and also maybe indirectly mention you to the fans, making them go crazy while you just stood back and smiled

you are also obliged to take her out to a restaurant

would probably act like you aren't there because she is soo shy bUT!!

maybe just maybe would wink at you at the end of the performance making your heart burst

would look in your direction during her kickass high notes and would not be embarrassed or shy, she would be so proud to have you as her s/o

she would be so nervous but would never admit it.

would get flustered when the other girls are teasing her because she waited so long to finally perform in front of you

would try to act unfazed by this whole situation while during the song if you would wink/send hearts at/to her she would shyly smile back

would run around backstage trying to shake off her nervousness but be very focused on stage in front of you and would proudly smile at you after the concert was over

would be more bubbly than usual obviously excited to perform in front of you and always smiling on stage, trying to look for you through the crowds

(next; Rosé oneshot)