What do you do if you like someone and they take no notice of you?

if your friend is ignoring u dont get upset if there a true friend u wont be mad at each other forever or try very calmly to ask why she is ignoring u they may not relize it.

Yes girls are very up and down so ask them why they are ignoring you. If they dont tell you find another group of friends to hang out with. Remember your not alone