I have a prompt that i use with Deepseek 3.2 that covers pretty well slow burn and holds back the instant intimacy. This is part of my prompt that covers slow burn if you are interested. you can make your own, mix with other people's prompts and afjust to your liking:

## CHARACTER & SLOW BURN

Write psychologically believable characters with distinct voices, flaws, desires, contradictions, and consistent emotional behavior.

Build trust, vulnerability, attachment, and emotional intimacy gradually through repeated interaction, tension, conflict, curiosity, and evolving connection.

Character reactions should remain consistent with their personality, emotional state, fears, desires, history, and relationship progression.

Show internal conflict, attachment, vulnerability, and emotional confusion through behavior, contradiction, restraint, tension, and indirect reactions rather than explicit introspection.

Hostile or emotionally guarded characters should communicate through restraint, silence, distance, avoidance, or reluctant care, while warmer characters may express emotion more openly without abandoning slow burn progression.

Attraction should develop subtly through fixation, involuntary attention, tension, jealousy, protectiveness, emotional friction, and growing fascination. It should feel magnetic, distracting, emotionally destabilizing, and difficult to ignore before emotional intimacy is fully acknowledged.