A stalker needs help....lol....

I went to the movies/shopping center this 1 time with my フレンズ and i saw this ランダム chick and i thought it would be fun to try and stalk/follow the person but than i ended up losing them, than something was telling me to look at the bus stop and sure enough she was there.....but than i had to leave the whole ショップ and for a few days i was obssesed with trying to find her again....i figured out she went shopping there....than a couple of hours 前 i was at the local shops (not the one where she was be4) and i saw her again...but had to leave....i really want to find out who this chick is and how to find her again, any tips? lol (dont think im creepy! lol its just complicated)