I'm in love with a 15 year old girl. I'm 27
That makes me feel rather uneasy. How does this younger girl make you feel?
When I'm with her, I feel fulfilled.
You can't really control who you feel love for, but the laws are clear in situations like this. She shouldn't let you date her, and you should not pursue this relationship either.
I have to be with her.
You cannot date a teen when you are an adult. This is against the law, and it will also draw the disapproval of others, including this girl's family and your friends and relatives.