In this story, (Y/n) has been an Astronomy Professor for 2 years. She has also been dating the one and only Professor Snape since the beginning of her career. Together they were happy and full of love... until something happened. (Y/n) had no choice but to leave the one she loved and leave what she loved doing. Though years later, the two ran into each other on accident. Professor Snape finally sees his true love come back to him... but with someone else beside her. Someone who she had to hide for years... because of him. Will the two reconnect what they had together? Will (Y/n) ever forgive Snape? Or will she leave again and never come back? But the real question is, what did Snape do to make her leave? And what will happen when she finds out the truth? *All Harry Potter characters belong to J.K Rowling.*