how do you know

how do really know that you have trully found that right one the one that is ment for you?
how does anybody really know? i think i hav found my one and only im not sure i meab id do anything for him and he woud do anything for me and he makes sure i know he wil.
i really don know how to tell if he is my one?
how would you be able to tell, i mean today he bought me a safire and diamond necklace and writes me lov notes.
i dont kn if he is can u help me figure out if he is eiher call ma cell 1-780713-6246 or comment 9r just write on ma wall thanks