Why are people confuseing?

this girl who is my best freind thought i was flirting cause i drew a heart on my paper im an artist by the way and she told me she dosent like me (i have asked before politely) so i said ik im just drawing one to draw then she flirts with me by brushing her leg against mine for 2 minuts nonstop then pulls away suddenly and asks me about this boy she likes before saying never mind im not one for skepticism but i seriously dont understand here obviously i not gonna go trying anything considering what she said but im just wondering is there something i am missing or not understanding or is she just giveing me mixed siganls/being freindly

Why are people confuseing?
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