Who is this guy? dedicated to someone i suddenly love

"I cannot help but just had faith"

had should be have.

"May I know this guy conquerring my brain?"

There is only one "r" in conquering.

"This is guy is someone I miss each day"

Delete the "is" before "guy", it will make more sense when you read it.

"To show and express this undying feelings."

I love this line, very sweet. "this" should be "these".

"Can I be with this guy who is truly holding my heart?
It seems so easy but it's just so hard!
Can I follow the shout of my soul?
To fight destiny and contradict people?"

I liked your wording here, you express yourself very well, and this is a very deep and meaningful poem, nice job.

"Will this guy feel the same?
And someday fight for me without shame?
I don't care if he won't
For I'm willing to smile another life's pain."

Good ending, nice questions tagged on in some of the lines, I liked that! :) My advice would be though, to just go back and correct the mistakes I pointed out, other than that this was a great love poem. Keep writing, always and forever....

PLEASE SUPPORT..