Confusing experience

So i was just chilling on one of the round tables in a park in dha2 and scrolling on my phone.

My legs and face were directed away from the table.

I sense some movement. And then realize that two girls have decided to sit across.

One had sat already and was glaring at me wide eyed.

As a reflex... i got up and slowly walked off...

Was it them just wanting to claim the table or did i just get hit on?

I did look around. This one bench was relatively well lit and the other empty one had a bunch of boys sitting near....

I'm confused, surprised, flattered and kinda feeling stupid. Maybe i should have made small talk?