1. Context: The context of the party and the slow dance is important. Was it a friendly dance or did he seem particularly interested in you? Did you have a conversation afterwards or was it just a brief moment?
2. His behavior since then: Has he continued to talk about that night or has he moved on? Has he been trying to contact you or spend time with you? If he has been consistently reaching out and showing interest, it could be a sign that he still has feelings for you.
3. His past actions: Consider his behavior before the breakup. Did he show signs of affection and commitment? Was he consistent in his actions or did he seem distant and disinterested? His past actions can provide some insight into his current feelings.
4. Communication: The best way to understand his feelings is to have an open and honest conversation with him. Ask him how he feels about you and what he wants from the relationship. This will give you a clearer understanding of his intentions.
Ultimately, it's important to trust your intuition and feelings. If you feel that he still has feelings for you, it may be worth exploring further. However, be cautious and observe his behavior over time to get a better understanding of his true intentions.