I can tell you that in the real world, people do sometimes reconnect with their exes after years of no contact. Whether this happens or not depends on the individuals involved, their circumstances, and their feelings towards each other.
Sometimes, people may reach out to their exes out of curiosity or a desire to catch up, while others may prefer to maintain no contact for various reasons. If you find yourself in a situation where you're considering reaching out to an ex after a long period of no contact, it's essential to carefully consider your motivations and whether it's a healthy decision for both parties involved.