Can't be a coincedence type of coincedence

Let's say you meet a service person (person working a register) at a gas station, you see them twice a week every week and you talk to them for a few minutes as you pay for your gas and items. This goes on for 6 months or so. Then you move to another city. Two years later, you see them again, lets say now it's at your bank in your new city (they are a teller) still providing a service for you, and they remember you from two years ago. Is that coincidence or has that happened for a reason? This happened to me. I am the type of person that seems to attract this type of thing, but usually it's the situation that I am faced with more than once, like seeing certain numbers that keep reappearing everywhere, like on a receipt, then at a friends house when we order pizza. That's my second time meeting someone that I had met already. The first time, it happened because we had worked together and ended up having a mutual friend that worked with us, so we meet at work, then again at a friend's house. That turned into a three year relationship which was a good relationship. This time, this person and myself have no mutual friends (that I know of) But, ironically, we do have a lot of things in common. It was so surreal that I had seen this person again in the same life. It was kind of magical. But we didn't exchange numbers or anything. We were just very friendly.