Coincidences stand out to us because they are salient. We notice them, but with the amount of ideas, people places and things coming into our brains everyday, it's not uncommon to have overlapping content. It's just that we are not very good at understanding the probability of things occurring simultaneously. As an exercise try to think of how many things pop into your head each day that don't have a corresponding "match," and you might get a different answer to your question when you ask, "Are there any coincidences in life?"