My friend thinks I like her crush? HELP PLEASE :X?

Problem is that she may be a bit jealous of you, especially if this is her first crush and you may have had other guys already interested in you, and thinks that some of the IMing done was behind her back in an effort for you to flirt with him. So you need to reassure her personally you have no aims on him by ignoring him when possible and maybe help her develop some self-confidence about herself.