Question: how do you know you're falling in love with her?
Answer: You want to tell her things. ...  You're growing interested in the things she likes. ...  She makes you nervous. ...  You're kinder than usual. ...  You actually care when you hurt or disappoint her. ...  You catch yourself in moments of jealousy. ...  You catch herself creeping or blowing up her newsfeed. ...  You're always happy to see her.