What is the ruling on feeling an inclination towards girls without communicating with them, and what is the advice regarding that?

There is no blame for a mere inclination of the heart. If you keep yourself chaste from the forbidden, you will be rewarded. The Sunnah (definition) has guided towards marriage between those who love each other, as the Prophet, peace and blessings be upon him, said: "There is nothing like marriage for those who love each other." If the girl is religious, then rely on Allah and marry her; otherwise, leave her and look for someone else.