You will definetly know if someone "fancies" you. They will be around you a lot and make an effort to be around where you are at social gatherings. If they have enough courage they will ask for your number or give you thiers. If you have enough courage ask them or tell them where you will be next be next weekend and offer them to come. Everybody has a gut instinct and you could also ask friends too. they're watching and they know more than you think!
You schoul let him know ASAP otherwise he will be in the dark. i know. i am a boy. teen, actually.
You should fancy him from far away. If he knows you fancy him, try to move on but if he doesn't, don't let him know.
There is no harm in going out with a boy who likes you, rest is your decision.
if you catch him looking at u all the time and flirting with you :]
He finds you less attractive and values himself and other things or people more than you.
If a boy fancy you they will play with you, sit next to you, make you laugh and always make you happy.
You can not get a boy to fancy you. If he doesn't like you, nothing you do can change that.
Boys aren't good at taking hints, Just tell them.
when they are not hitting on every girl they see and not including sexual humor when they talk to their friends.
Be yourself! They are only worth it if they fancy you when you are acting like yourself
look amazing and talk to him
No.