Ask her? Or, if you don't know her; try to read her body language and facial expressions. If she can't keep a straight face while looking at you or if she makes a slightly disgusted sneer, then that's how you'll know.
Please don't tell jokes! You usually mess them up and look stupid. Try saying something that is personally funny, or an inside joke. If she really likes it, whenever she thinks about it, she will think about you.
* You look in her/his eyes and face,tell her/he how you feel.
ni they are so old no1 thinks they are funny anymore
yes there is becuses it girl game dooo an i funny i love to be funny. cant you tell well am thang to be funny
That is simple - ask her.
well,you can tell if a girl is interested by paying attention to how she acts around you, and how she acts when you're not there. if a girl likes you then she'll be a bit nervous around you.play with her hair and pay attention to her looks.she'll smile if you look at her and then look away,still having the smile on her face and if you keep looking,she'll peek at you and then laugh! and if she's funny,she'll try to be even more funny when you're there! frankly,you can tell if a girl is interested by simply looking at her!
He is immature and thinks he is funny. Tell him that or just avoid him.
tell him straight up
Asking her is the only (or best) way.
She laughs alot...even if its not funny
all you have to do is tell her how you feel about her. every girl likes to hear what a guys thinks of her! maybe take her to a movie or somewhere where you are alone and just tell her evrything! you forget her and look for someone else
be romantic ,kiss / snog her ,look into her eyes and tell her you love her !