"Eyes up" typically means to direct your attention or focus upwards, either literally or metaphorically. In various contexts, it can encourage someone to be more aware of their surroundings, to seek new opportunities, or to maintain a positive outlook. It's often used in sports or teamwork to remind participants to keep their heads up and stay engaged with the action or their objectives.
It means that your eyes are wandering, and suddenly your eyes meet up with another persons.
Get a grip
that they may have a bad life in grown-up stage
It means that their eyes have this piercing glare or commanding glare. Sort of the,'Not putting up with that!' look.
he probably likes you
It's dark circles around your eyes or dark make up made to look like a raccoon
I am not sure what you mean by "spread your eyes." If you mean to move location the answer is no.
For your eyes
it depends scratching will damage them standing in front of light can it depends on what you mean
he has always liked you.
he probably thinks your cute
He probably does like you :).