I am sitting at a table alone and two girls I don't know sat next to me at the end of the table next to me. They kept looking at me and talked even louder so I could hear them. Is this an indicator that I should talk to them? Btw they are friends of my crush.
It's hard to read things like that, I would go with your gut. whenever new people come near you like that, try engaging them in conversation and see where it goes. It'll make things easier too for talking to your crush if you're already in with her friends.