WIY,
What about if the girl is your daughter? Do you think its ok for other men to leer at her based on how she is dressed?
You may have a tayvah, but YOU are responsible for controlling it or staying in your house.
Women are dressed inappropriately ALL OVER THE PLACE. Obviously some places are worse than others (like a beach) but there are women barely dressed on the street. You think its ok to leer at her? Or act on your desires whether or not she agrees?
I didn’t say it was easy. But it still doesn’t excuse your (the general you, not specific) behavior.
EDITED