Honestly I headcanon trickster davekat as just dave and karkat being really fucking candid about their relationship instead of all the bullshit secrecy they normally have. They just smile way too much and sit in each other’s laps way too many times and say that they love each other with disgusting frequency.
SLYTHERIN: “No one expects a woman busy at her sewing to pay attention to what’s being said around her. Never mind if a man’s mother and sister showed them they heard everything while they stitched, he’ll still think a woman who plies her needles saves all her brains for the work. You’re a far better spy hemming sheets than if you clank with daggers.” –Tamora Pierce (Trickster’s Choice)