no bro, i've had this happen to me before and with those type of girls to see the real IOIs you have to look for things she does that she does NOT do with other guys. When she treats you differently then she treats the others. thats the true IOI. the main reason the majority of girls like this are giving IOIs like candy is because they want to receive them back right after each one they give. so remember to watch for that

dont do what every other guy does and flirt back. let her know shes going to have to work a bit harder then that.
good luck

hope i helped
Takeher