How do we know that there is someone out there?

for us?how come i didn't see any?but then i knew when someone like me for who i am or just want to fool around?they said there is true love but how come i never seen one?i realize i don't fall easily or people...can anyone tell me whats the reason?people thought they can just take me that easy but i just don't see anything that people catches our heart..why is this so?am i too picky?but then i really didn t have that feelings for others.and i m looking for faithfulness it just don't seem anyones is. there any faithfulness and true love exist nowadays?