speak to her as if she never found out you liked her. Be friendly and act like you never told her, and if you still fells its awkward ask her if you likes you and if she doesn't just move on to someone who does like you
you ask her if she does or you just keep talking to her and bring up "who do you like?" in the conversation
Generally you act shy or awkward around the guy/girl you like at first because you like them so much. You get used to it though and become closer and less awkward as the relationship grows
She might be a little more flirty or awkward around you, depending on how she feels about you. You really want to know if she likes you though, right? Try asking her!
they might act differnently around you than they used to. they might get awkward, they might be flirty, they might freak out whenever you talk to them, they might completely ignore you, it depends on the girl an how much she likes you.
Tell him to invite some friends.
Try to be just friends with him.
it means that she knows you like/are in love with her
Make a move since she knows.
start a normal conversation like... "i like your shirt" or somthing like that and then ask her out for a drink to a public venue (so either of you won't feel shy)
Just act normal! Act like how it was before. Just be friends with him and see what happens from there, don't over react it just makes things more awkward.
I know you have a boyfriend but I really like you. It's as simple as that:) no joke just tell her!!!!OR just don't tell her at all. it'll just make her feel awkward around you because she knows and she already has a boyfriend.
Smile.