How do I express?

I just lack courage I know
I've got a lot to express,
It's my true feelings for you
Not saying just to impress.
Whenever you come closer to me
I see the world through your eyes,
I feel like expressing about what I've got
But again my courage denies.
Yes, I feel jealous sometimes
Also, I've got insecurity,
And all this is because
My feelings got purity.
I wonder about what if it goes bad
While trying to make it better,
I want to express myself
But again I tie it with a fetter.
I know you don't feel
The way I feel for you,
You've got somebody else
You're giving me the clue.
I know this all because
Real eyes, realise, real lies,
I've got a lot to express
And this is why my courage denies.