How are love and hate presented in Julius Caesar?

Love and hate in my opinion is clearly shown in the start of act 4 scene 3 when Cassius and Brutus are in the tent near Sardis. They are shown that they are close to each other and that they care, however Brutus is showing hate where he says that Cassius has an itching palm as he took a bribe from Caesers army (the sardians).