Derek Morgan
Derek was all about the PDA. He loved to show you off and you loved the attention. He would always hold your hand and kiss you when ever he got the chance.
Aaron Hotchner
PDA was never something Aaron was really good at. He would sometimes kiss your temple just to remind himself that you are still there, but he never really held your hand and kissed you in front of others.
Spencer Reid
Spence didn't show any PDA at all, he never really understood it. You would casually kiss his cheek and he would respond by pecking your lips. However, he never showed any PDA on his own.