how to know you really love one people?

some people say"i don't know."and some people say"有 feel"

but what is feel?always people say"唔知點講"

but i think you will do it:

when you see your lover, you will always look at him/her.

every things she/he does you also think it is right.

you always say somethings about him/she.

you always think about him/her.when he/she was sad.you always to be sad.

when he/she was happy.you will become happy.

you will afraid him/her cry because you don't want him/her to be sad.

when i love one people,i really think that.

i think it is same to you.perhaps you think it just for me.

when you really love one people,you will know.