How To Tell If A Girl likes You. A SECRET TO FINDING OUT THE TRUTH. IOI's, also referred to as indicators of interest, are little gestures that girls do that tells that they are attracted to you. Many guys do not know about this and do not know when a girl likes them. ------------------------------------------------------- Follow Me On Twitter: twitter.com If you get to notice IOI's, you will easily know when a girl likes you. There are many more IoI's. These are just some of the most basic.