when they are not hitting on every girl they see and not including sexual humor when they talk to their friends.
There is no harm in going out with a boy who likes you, rest is your decision.
You schoul let him know ASAP otherwise he will be in the dark. i know. i am a boy. teen, actually.
Unless you have two heads it does....
If he is going out with someone else it is best to let things go as nothing can become of you while he is in another relationship.
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.
What you do is, GET YOUR AFRO WIG AND PARTY IT UP!
it depends on the event if you just going out to chill a boy but if your going some place fancy a girl
if you catch him looking at u all the time and flirting with you :]
If a boy fancy you they will play with you, sit next to you, make you laugh and always make you happy.
He finds you less attractive and values himself and other things or people more than you.
Explain to them that you are interested in someone else and you are going to have to talk to this boy you like if you ever want to know if this is going to be an option for you.
There is no particular age, so don't feel forced that you have to fancy someone or go out with someone. However, in general, people tend to get their first 'crush' around 13