It depends.
Some girls are shy around the guys they like, especially at that age.
Some girls stare at the guy and then look away when he catches her.
Some girls steal the guys things (jeckets, hats, backpack, etc.)
Some girls "accidently" touch his hair.
how can you tell if a boy is flirting with a girl and also likes her to an extent?
just tell her you like her and then ask if she wants to go out with you, but don't pressure her. Ask somone that is really good at telling if someone is flirting, and have them hang around the two of you, secretly though.
if you are the 15 year old boy tell her how you feel about her. if you are the girl then tell him how you feel about him and tell him it cant work.
if they are constantly flirting with eachother
Yes it is
honestly, i wuld tell my girl best friend whats going on and try to stay away from the boy cuz either ur going to break ur friendship with the girl for the boy.
Its means there flirting with you.
Tell him you like him.
Then put them in a room together and tell the boy that the girl is not crazy and wait until the boy and the girl are somewhat agreeing
how do i tell if my my turtle is a girl or a boy?...
If I was the girlfriend, and I know what's going on, I will talk to this girl and ask her what she is trying to do. I will ask her if she knows that the boy she is trying to flirt has a girlfriend. I will be civilize and calm and be professional about talking to the other girl. I will also tell her how will she feel if it was her boyfriend that's being flirt by another girl. Then I will ask nicely to stop flirting with my boyfriend.
You can't "get" or "make" anyone like you. If he likes you, watch out for warning/flirting signs. just be yourself