Why is my friend obsessed with me! help!?

wow! this has happened to me and i pretended to like her but then i didn't even talk to her she got the point but... wait she's straight right?and if so then she may just think your the coolest person ever so just talk to her nicely and say "jenna" lately you've seemed clinging and its getting old is there something wrong whats up??? and if she says i didn't notice i was then say oh well you kinda were and just talk it out nicely