Good communication is key. If they can freely talk, laugh together and share personal stories without feeling awkward, it makes for a great blind date story. For instance, they might start with small talk about the weather but quickly move on to deeper topics like their dreams and family values, which shows a real connection is forming.
Common interests. For example, if both like music, they can talk about concerts they've been to. It creates an instant connection.
A positive first impression. If one person is polite, well - dressed and has good manners, it sets a good tone for the date. Also, unexpected similarities like having the same birthplace or having studied at the same university can make the date memorable and good.