Once you start believing in love, you start to see it all around you. And once you are in the process of loving something or someone, you tend to see them all around you. Just like recently I am seeing Peugot E-208 cars everywhere, and often in the Jaune Agueda color of the one I just ordered...
And once you are in that spiral of ever more love, magic starts to happen. You learn pretty soon that coincidence is not true, when you start seeing more and more synchronities. A sync in short is a combination of events that has meaning to the observer at that particular moment.