Based on the provided research, here is a summary addressing how to disclose a trans identity to a casual partner:

Disclosing a trans identity to a casual partner is a personal decision that should prioritize your safety and comfort. Research indicates that transparency and honesty, when you feel ready, can foster trust and mutual respect in the relationship. It is often recommended to choose a private, comfortable setting for this conversation to ensure both parties can communicate openly. Additionally, gauging your partner’s attitudes toward gender diversity beforehand may help you assess how they might respond. Remember, you are not obligated to disclose until you feel safe and prepared to do so. Your well-being should always come first.