a glimpse that took my heart away...... <3 <3

Hello! It's Cello here to review!

Let's get to it-
(I'm probably going to be focusing on little mistakes for the majority of this review)

my life was dark without you

you came in my life like a ray of happiness

every word which you said touched me

i could hear my breath whenever i saw you

On the second line, you should be saying 'you came into' not 'you came in'. 'In' is usually used for still objects (Ex:the toy was in the box) while 'into' is better for motion (He walked into the store). The person you're talking about was not previously in your life, they moved into it so 'into' is the term you should be using.
In the third line 'which' would do better as 'that'. 'Which' tends to imply that you're adding unneeded information. (ex: The dog, which I had earlier found in the park, was brown) This part of the poem wouldn't make a lot of sense without 'you said'. The information is needed so 'which' should not be used here.

i didnt knew what it was

even was unaware of that feeling

it still happens when i see u

and now i know what it is

it is LOVE that is pure and serene

Because of your current tense, 'knew' needs to be 'know'.
The second line doesn't make a lot of sense to be completely honest. Are you going for 'I was even unaware..."? Take a look at what you're trying to convey here and edit the wording. (I'm happy to help with that if needed but I need to know what you want to say first)
I see that you're going for a more relaxed set up to this poem (due to the lack of punctuation and capitalization) but you still need to spell out 'you'.
Finally, 'serene' doesn't sound like the right word. The speaker seems to be falling hard for this person. 'Serene' means calm and I can tell you from experience that love is never a calm thing.

today is the day that made us come together

it was your first word which brought me close

i couldn't feel the world around then

you became my universe, to live in

Only one major thing here- you don't need a comma after universe.

i cant blame the words which you uttered,

it was your eyes who took my heart away

i could see myself getting deep in you

and it was difficult to conrol myself

Another thing that should be an easy fix. "Getting deep in you" has a bit of a different connotation than what I think you're going for. Maybe try 'Falling deeply in love' or 'falling deep into your eyes' or 'being pulled deep into your heart/soul'. Be more specific than 'you'.
Small note- 'conrol' should be 'control'.

i was thinking to say what i felt then and there

but, i stopped and waited for the right time

i still can't remember, the way i expressed my feelings

as i was lost in your eyes, the way i get even today.......

I feel like the first line here could be more properly worded. 'I was thinking to say' would flow much nicer if written as 'I wanted to say'. Not only does it help with the flow but it adds some personality to the speaker.
I have one last thing to leave you with. And ellipsis (which is the '...' thing) should be used to indicate missing text. Wether you cut a part of a quote out or have someone trail off in dialogue, it always tells the reader that there were missing words in what they just read. Here, at the end of your poem, an ellipsis is unneeded.
I feel the need to end on a positive note so I'd like to mention that I thought you did a great job at putting meaning int your text.
Keep up the great work!
-ChocolateCello