Anyone here familiar with in depth astrological compatibilities?

My sun is in Pisces, moon in Scorpio, and Libra rising. I don’t know what any of this means at all, however, I have been seeing someone who is a triple Piscean (whatever that means) and two people have recently told me we could never make it because of that. Not that I actually take stock in this, but it does interest me. And when I looked on-line, several sources said Pisces were the best compatibility for each other while other sites said otherwise. Just wondering if anyone on here knew about these things and if so, what they thought of my match with this person.