I'm obsessed with a girl I only saw once two years ago
Have you been able to meet her in person?
No, I haven't met her.
You shouldn't be obsessed with people. It's an unhealthy behavior that can potentially lead to hurting others. You should focus on forming healthy attachments to others.
No she is it for me. I'm going to find her, no matter how long it takes.
I am glad that you managed to form a connection with someone but you cannot let yourself become so obsessed with another person. They might get scared off if you come on too strong.