for their lunch date that we can see in the atlas when Nadia and Ryan come to a table where pidge and keith are sat together , it was keith that asked her to have lunch together :
they where solving a problem in the maidbay and when they finished , keith turned to pidge like ;
-pfiouuu .. im starving .. wanna go have lunch or what ?
pidge agreed kindly .
He realy enjoy her presence because she always say realy interesting things and also because she is funny . ( he also likes her voice ..)
-by me ✨