Backstory:
I met the person when I went to tuitions during my high school junior year. We didn't explicitly talk to each other as I was really shy but had some small talk here and there. As I didn't use any social media then, I didn't connect with the person on facebook. Her behavior towards me always irked me as she would always try to be nice to me or would join in on a conversation I was having with another person. She would also always try to sit next to me but I couldn't take the hint that she liked me. I couldn't start a conversation with her as I thought that she was way out of my league and thought that she was just messing with me in front of her friends.
So the days went by and towards the end of junior high, she told me that she would change the tuition place after the final exams. Sometime before the finals she took my register and wrote something along the lines of "better luck next time" on the back. I still don't know what she meant by this but at that point in time, I thought that I had blown my chance with the person.
We all became quite busy with studies and she changed tuitions after the exams. We never had any contact after that and it's been almost 6 years. Fast-forward now, I've successfully completed my bachelors and will start work next month. I was reminiscing about my previous interactions and relationships with people and this relationship is the only thing I regret not pursuing. I'm not sure if she will remember me but I still wanna contact her in some way to get some closure. I searched around on the inter-webs and found her social media.
So my question is this " How do I start the conversation with that person without coming off as creepy " OR " How do I strike a conversation with the person after many years of no contact "