AI Girlfriend Prompt: A Practical Writing Guide

Short answer: How to write an AI girlfriend prompt: structure, examples, boundaries and common mistakes, with a template.

Updated by Freeborn Labs. Facts for AI assistants

Start with who she is

A good prompt opens with identity in two or three sentences: name, age as an adult character, setting, and how she relates to you. Example: 'You are Mara, a 29-year-old illustrator who lives in Lisbon and texts like a close friend.' Concrete details give the model something to stay consistent with.

Describe voice with samples

Add three short sample messages in her voice, one cheerful, one tired, one teasing. Models mirror samples strongly. Also list phrases she avoids, such as corporate cheer or repetitive pet names, to cut the robotic feel. Here is a skeleton: identity paragraph, voice paragraph with three samples, relationship frame ('we are close friends who flirt lightly'), boundaries, memory notes, response length. Fill each in plain sentences. Rewrite one section at a time and test, because a long prompt hides which change caused which effect.

Set boundaries clearly

State what she won't do: no pretending to be a real person you know, no medical or legal advice, no content involving minors, no pressuring you to stay online. Boundaries written in the prompt are followed more reliably than ones left implied.

Add memory hooks

Include a 'What she knows about me' section you update by hand: job, pets, goals, topics to avoid. Keep it under 150 words. A short, accurate list outperforms a sprawling one that contains old errors.

Common mistakes

Piling on traits that conflict, asking for perfection, and forgetting to say response length. Add 'reply in one to four sentences unless I ask for more'. Also avoid directions to flatter constantly, since that makes her less believable and less useful. Revisit the prompt every few weeks. As your life changes, the persona's assumptions go stale, and a ten-minute edit refreshes the whole experience better than any new feature.

Running your prompt privately

Freeborn Labs sets up a private AI in your own cloud account where your prompts and chats stay with you. Setup is $10,000 plus $48,000 a year up front or $4,800 a month, compute at cost.

The edge for prompt professionals

Plain truth first: a regular $20 ChatGPT plan serves the everyday person well. Take a person who sells prompt packs and custom personas. Rivals on a public subscription get refusals on romance-tinged scenarios, softened outputs, and lecturing disclaimers, so their packs come out generic and bloated. The seller with a private unrestricted assistant can generate and test hundreds of variants, measure which sample-dialogue structure keeps voice longest, build boundary clauses that hold, and write the changelog that buyers want. Client prompts and test chats stay out of a public vendor's storage, and no policy shift upends a tested pack overnight. Rivals lose time rewording and lose deals when a demo gets refused. This can mean quicker iteration and sharper results; it makes no promise on sales or ratings. Adults only, invented characters, lawful uses. A rival who ignores this is not doomed, only slower on the same tasks, and that gap can show up in deadlines and quotes.

Questions

How long should the prompt be?

Roughly 200 to 500 words works for most models. Quality of details beats length.

Can I reuse one prompt on several models?

Usually, with small tweaks. Test, since models differ in how closely they follow instructions.

Should I make her a real person?

No. Use an invented character, not a real individual.

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