Im falling 4 a girl that im not supposed to fall 4 haw do i stop it?

ok well this is the scoop i live in apartments, about two years ago sum of my friends moved in a few doors down. A year later this girl also moved in right next door,and well she was cute but noting special. Before i get the chance to meat her one of my boys(call him carlos) made a move and pulled a one night stand, a few months go by and my other friend (lets call him hoobs) actually started going out whit her but Hoobs knowing Carlos already did his thing whit her he dident really take her seriously and yes we made jokes abouth it sum-times, but to her this relationship was serious and she totally fell in love whit him so like guys do he played whit her till he found another girl and simply up graded.k this hole time Hoobs is going out whit her we never realy talked just hanged out sum times wen Hoobs who'd bring her along to like a party or a BBQ but never talked to each other (dont know why just dident), so now that Hoobs dumps her we finally start talking (she ended up working wer i work so thats why we started talking) turns out shes a nice girl and i started 2 feel a strong connection to her i know its more then just a crush i never liked her till i started actually talking to her and i feel happy *** heck wen i see her she brightens up my day just by seeing her pass by i cant explain it but yea.I now notice small thing like her smile the way she walks the smell of her perfume i even started to catch my self thinking abouth her all the time , i cant tell my friends this i just cant if you got eny advice please let me know