I don't have a crush on anyone?! help?

i hav liked alotta guys but right after i get ovr them then i find a new guy but this recent crush i got over i didn't find a new crush.. soo now im like sorta bored with my life that i don't have a crush.. is it normal that i don't like anyone if im a teen gurl?? any1 answer thiss plzzzzzzzzzzz ;)