May I jealous?

I'm stand here
Waiting for you maybe?
You come.
Take my hand and dance until midnight.
Feels fly.

The next

We are still on the same place.
But , this time is different.
There's another girl.
Another young beautiful girl.
And you...
Still wear that same smile.
But...
no,no way!
I realized that , your smile is for that another young beautiful girl.

And i?
Still stand in the same place wait for the same people.
And watch at you and her with broken heart and of course , tears.
And i realized , for the first time , i'm jealous. 
And , May i jealous?