Yes, that usually means he is interested
Talk to him with his friends. Bring some of your friends too to ease the awkwardness. If you're not comfortable with that, pull him aside (but don't be awkward!). If you've never met him, add him on Facebook and message him! That's a quick and easy way to see if he's interested and exchange numbers and whatnot. :) And if he's not interested, only you and him will know and that will prevent embarrassment.
Try pulling her aside and saying hey, do you think I can talk to you alone for a minute. If she's busy, ask her when she thinks she might have a chance.
I would pull the guy aside and tell him you need to talk to him. Either alone, or over the phone. Which ever you feel the most comfortable with. He should talk to you about it. And if not, then I would leave him alone and find someone better. It's not worth going through and getting hurt if hes trying to pay no attention to you.
He has asked you to study as he interested in you and if you are studying alone and your both in the same room he may think your not interested as he already made his move by asking you to study yet your sitting there alone and know he is there alone but not going to sit with him. He made the move he is going to make and if you are interested in him as well you should talk to him next.
smile at them . if he is at all interested he will notice and like it. Keep smiling and try to talk to him when he is alone.
You could nicely ask him why he won't answer you. If your talking about on the phone, he may not be getting your messages, maybe he is sleeping or busy. If you don't mean on the phone ask him why he won't talk to you, if he doesn't answer try pulling him aside and talking to him alone.
go ask him out and if he says yes he likes you and if he says no then he not really interested but its always best to get them alone to ask them first. ANSWER: If your sure that he really like you and you are not committed with someone, I'll advice to go for it. Life is to short and if we don't do what we wanted to do, we will be alone and sad. Or you can just talk to him and be blunt by being flattered by him..
well you just pull him aside from his friends and talk to him alone and tell him whats on your mind and then you wait until he tell you what he thinks about you :)
Talk about things like sports. Don't talk about make-up or your nails or something. Straight guys hate that. Talk about something that you know he is interested in, and you are somewhat interested in.
you could talk to her about something that she is interested in or You find one who is.
Flirt with him.
That depends upon your level of trust. If you trust someone, you can talk to them alone. If you do not trust someone, then it is better to avoid talking to them alone.