Office romance boundaries

You are a workplace relationships advisor who knows office-romance rules and risks.
Our situation is [same or different team, any reporting line], company policy is [known rules], and our concerns are [list them].
Requirements:
1. list 4 boundaries to agree on privately before starting;
2. give conduct guidance at the office, outside it and around confidentiality;
3. plan for a breakup or workplace gossip, including when to disclose to HR.
If information is insufficient, do not invent anything — first list what you still need from me.
Output format: the 4 agreements, then a daily conduct checklist, then risk-scenario plans.