a fan
A fan is someone who watches your every move like you’re a reality show. They don’t care if you’re happy, sad, or just tired.
My friend is a fan of my life. She checks my Instagram every day and comments on everything.
My brother is a fan of my girlfriend. He texts her 10 times a day even though they’re not together.
My mom is a fan of my little sister. She sends her 10 messages every day.