What was the experience of meeting your ex?

In this city that is not too big or too small, it is sometimes easy and sometimes difficult to meet someone. Sometimes when I meet someone, I feel very happy and want to say a lot of unfinished words to him. Sometimes when I meet someone, I feel caught off guard and don't know what the first sentence should be.

Once I was waiting at the bus stop, a boy ran past me and got on a bus. When he passed me, I felt like a person. I liked the man in the red coat or shoes. After he got to the station, I kept looking at the back he left for himself. After the bus left, I wondered if it was the same person.

But I just thought about it for a moment, because it had nothing to do with me, but I thought it was amazing at the time, and I didn't expect to meet him again. Because the time interval is a bit long, I don't feel anything. Later on WeChat, he asked me if it was me that I saw that day. I didn't have time to talk by bus that day. I said it was me, and they never contacted each other again.