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Hi Serba, this looks very good!
I'd just suggest a few adjustments.

beautifulness ---> beauty

"I have learnt that every second is worth to be an infinity and the only thing that I want to be sure is that it is to be full of my days with your presence forever."

This line is a bit complicated, hard to understand.
What do you mean by "every second is worth to be an infinity"?

The last part I'd say: "...I want to be sure that my days will be fulfilled with your presence forever"

every second is worth an infinity.
what about this lilian?

and I have changed the others thank you

Yes, that's fine.
I'm adding a couple of commas an setting a poll, OK?