"IoI" stands for "Indicator of Interest," which refers to any action or behavior that someone demonstrates that could suggest they are interested in someone else romantically. Some common IoI's include: Frequent eye contact and smiling Initiating conversation or finding excuses to spend time together Laughing at jokes or finding ways to touch the other person Asking personal questions or expressing curiosity about the other person's life Complimenting the other person or showing enthusiasm for their interests Making plans or suggesting activities to do together in the future It's important to remember that IoI's are not always a guarantee that someone is interested in you romantically. Some people may exhibit these behaviors for other reasons, such as being friendly or outgoing. It's always best to communicate openly and directly with the person you're interested in to understand their intentions and feelings.