Well it matters on how bad. You should try and see if his friend is fine, and be as nice as can be to him so he'll be nice to you and so your crush wouldn't or may not be mad anymore.
It means that one of them is lying or your crush is shy to say it
Be honest with your friend and see if you both have crushes on each other.
Get a better crush, or try to be a better person around him. And don't freak out. Lots of times, it just means that the other person has a crush on you but doesn't want his friends to know. Or he could just hate you.
Learn from it to not let your "enemie" know who your crush is.
yes
Wave at them casually and then wave at a few others in the hallway/room.
No. This can cause relationship problems between you and your friend. Friends are always better than crushes.
it means your crush likes your best friend
i would ignore(not completely) their best friend just enough to let him know you don't like him and then flirt with your crush and see what happens...
No or maybe because they don't want to admit it cause they know the girl is his crushes friend.
Crushes. Ex. She has crushes on both her math and science teachers.
i think you need to talk to your crush about your friends crush who has a crush you on you and your sister knows about your crushes crush who wont tell you who they're like TOTALLY crushing on but they want to but promised your crush they wouldn't tell you who their crush was because their mom wont let her date and her sister is only a year older but she's allowed its SOOO not fair omg like wtf, and my sisters crush doesnt even like her so omg like LAWLZ!