Is it normal to want to sleep with my friend?

A few days ago I met up with one of my high school friends that was visiting family in the same town where I go to college now. I never thought of her as anything more than a friend in high school but now I have the weirdest lust crush on her. the weird thing is that now i prefer jacking off to her over watching porn. its like shes the only thing i want to put my dick in (as stupid as that sounds)