my mind....

why are you always on my mind nowadays...... b4 also u used to be but just as my frnd but now i keep on thinking about you now and then never ever have i experienced this kind of feeling....... i dont know wat it is but it is sumthing very different that is making me happy and sad too....  does this happen alot or its just my myth or sumthing i cant getover with.... god knows wat is it but it sumtyms feel good and sumtyms feel weird and stupid.......  help me plzz to take a decision or atleast clear my mind............