Yes, there are some connections that are way too strong to be termed as coincidences. These are so organic to our souls, that it would not be an exaggeration if I say that they are a lifetime old.
Frankly speaking, I have always believed that those who love you very strongly in one lifetime, will surely find you in the next but maybe in a different form. Souls are immortal and have a memory of their own and they make use of it to find their way back home in others, who truly never leave. Identify that connection and never let them go.