PLS!! i kind of have a dating problem.. -_- ?

i made out with this guy and then we talked on facebook we talked every day for 3 hours non stop ... he was being really sweet. we have a date tomorrow ... and our mutual friend says he wants a relationship. other than that hes really does show interest in me. today i go on facebook and i see this girl who im pretty sure was his ex girlfriend post on his was "baby i adore you!" he hasnt seen it yet... but im pretty fustrated and sad.. what do i do ?