Finney: Quality time
He like to sit and talk with you for hours about the things on his mind
Robin: Physical touch
Kisses, Cuddles, Hugs. You name it he loves it
Billy: Words of Affirmation
He likes to make you feel loved by giving you little sticky notes
Griffin: Gift giving
He sneaks little makeshift flowers he makes for you before you two go to school
Bruce: Words of Affirmation
He would either think of creative way to say "I love you" or after his games he would give you baseballs with cute phases on them he signed
Vance: Physical touch
He would put his arm around your waist unconsciously as "protection" from other people trying to steal you away from him