This is one of satan’s traps! Allah has ordered us to lower our gaze and it is prohibited in Islam to mix with the opposite gender.
You must stay away from all women and girls and lower your gaze or you are bound to fall into the filth of sin.
Our Prophet salla Allahu alaihi wa sallam had advised the youth to get married! If this is not possible, then he ordered them to fast as this would help them control their desires more.
Avoid anything that provokes your sexual desire such as watching movies or listening to music and surround yourself with righteous practicing Muslims all the time. Learn your religion and learn what Allah really wants of you.