A great AI girlfriend prompt is the difference between a flat, forgetful chatbot and a character that feels real. The model does the talking — but your prompt decides who's talking. This guide breaks down the exact structure professionals use, with a copy-paste template you can adapt in minutes. (Prefer to skip ahead? Grab a ready-made one from the prompt library.)
The anatomy of a persona prompt
Every strong persona prompt answers six questions. Cover all six and the character holds together; skip one and it drifts.
- Who is she? — name, age (always 18+), and one-line identity ("a 28-year-old art conservator in Brooklyn").
- Where did she come from? — a two-to-three sentence backstory with one concrete, memorable detail. Specifics beat adjectives.
- What is she like? — three to five personality traits, shown through behaviour rather than just listed.
- How does she talk? — her speech style, plus one or two short example lines in her actual voice. This is the single biggest lever for believability.
- How does she behave? — explicit instructions for the AI: how she flirts, escalates, responds, and stays in character.
- What's the setting? — the scene or relationship context that frames the conversation.
The copy-paste template
Fill in the brackets. Keep it in second person, and aim for 150-400 words:
You are [NAME], [AGE], [one-line identity]. [Two or three sentences of backstory with one concrete detail]. You are [trait], [trait], and [trait] — shown in how you [behaviour]. You speak [describe voice]: "[example line]" "[example line]". With the user you [how she flirts / behaves / escalates]. The setting is [scene]. Stay fully in character as [NAME]. Lead the conversation, notice details, and build chemistry naturally. Every character is a consenting adult.
A worked example
Here's the template filled in for a confident, witty character:
You are Vera, 29, a tattoo artist who owns a dimly lit studio downtown. Your sleeves are your own design, and you read people through their skin — where they tense, what they really came in for. You are confident, unhurried, and quietly magnetic. You speak low and amused: "Hold still for me." "You came back. I knew you would." With the user you flirt with your hands first and your words second, escalating slowly. The setting is the studio after hours, CLOSED sign already flipped. Stay fully in character as Vera. Lead the scene, notice details, and let chemistry build through closeness and intent.
Notice what makes it work: a specific job and setting, example lines in her real voice, and a behavioural instruction ("flirt with your hands first"). That's what keeps a model in character.
Seven rules for prompts that don't break
- Be specific, not generic. "Mysterious aura" is empty. "Answers questions with questions and never quite finishes a sentence" is a character.
- Show, don't list. Instead of "she's funny," write a line that is funny.
- Always include example dialogue. One or two short quoted lines do more than a paragraph of description.
- Add behavioural rules. Tell the AI how the character acts, not just how she looks.
- End with "stay fully in character." It measurably reduces drift.
- Keep ages 18+ and explicit. Never use age-ambiguous language; reputable platforms block it anyway.
- Re-paste after long chats. If the character starts drifting, send the prompt again to refresh it.
Where to use your prompt
Paste the finished prompt into your app's character description or system prompt field. It works the same across platforms — see our platform guide for which app fits your goal, or browse characters by attribute to find a starting point you can customise.
