All of them. Everything everyone has replied with so far. She's naive and doesn't get the concept of being in love with only one person, and her demon instincts encourage her to pursue them all. She's like a kitten learning how to hunt, confusing demonic lust with true love. Reverse harem mode as an occasional subplot.
She has like four to five primary targets. The bully whose dad is a demon hunter who always tries to bully her but somehow always makes her happy instead. A christian fundie kid who is just as oblivious and sweet as Satina but his parents are terrified of her. An emo fuckboy who's into the occult and keeps trying to get her to devour his soul. A cool popular kid who never remembers her between meetings that all the girls at school like. And a rich summoner kid who thinks she's his evil minion and wants to rule in hell someday.