Dream About Encountering Ex Relationship

I was carrying a broken phone to a repair shop, as I walk in there is a set of stairs that lead up, to a over head unit. The shop is down stairs. I meet the guy and show him my phone. As I'm looking around I hear a familiar voice repeatedly getting louder correcting a younger voice about naught and zero being the same. I move towards the stairs and walk up a few, as I do, my eyes lock with hers, it was Heather. I walk back down stairs trying to avoid a confrontation as she still hasn't spoken to me for years. I collect my phone and walk around the shop a little more and Heather comes down and follows for a bit. I leave the shop, and walk across the street, as the owner, now a friend comes out, and asks about my relationship with that woman, ad she didn't stop talking about me once I left, wanting to know everything. I woke up, with tears in my eyes.