Jace: You both went to a club.
Meliorn: You hung out at his place.
Alec: You both went to go see a movie. Of course one with no romance or comedy. Just a pure action movie.
Magnus: You went to one of his 'famous' parties.
Camille: You hung out at her place watching movies. You had to explain somethings to her about the vampires and werewolves in movies.
Hodge: You had a picnic indoors at the institute.
Isabelle: You both went to a fancy restaurant.
Simon: You went to one of his gigs and you got coffee afterwards. You ignored the glares you got from the girl Simon is in the band with. You didn't care what her name was.
Clary: You both went to a concert and then got coffee afterwards.