unexplainable and wont be able to prove

I found one thing strange for so long...
such as suddenly one day I thought of someone, then later I would find some linkage with that person...
Such as I was thinking of an old friend on the way back to room, then when I came back to room I found there would be a text message from that friend;
Such as when I was thinking of one classmate I was in the same class before, when I came downstairs, turned around and suddenly met the one.
Such as when I was sitting there eating lunch, recalling one of my teacher, then suddenly when I turned my eyes from the table to the queue lines, I found the teacher in the queue buying food.
Such as one hour ago, I was thinking of a girl, then suddenly I met her in the shop and she was so welcome saying hi to me.
And mostly those people came to mind very shortly, and those people are not so familiar enough that I could ask whether they have the same thought with me, and also those people I do not think often, just suddenly thought and then it's became strange that I met them soon.