It seems he may be trying to make you jealous as he may really be interested in you more than a friend.
Well i know that when a girl is flirting she will touch your arm or laugh louder than normal. if a girl is just your friend she will treat you as if you are a friend.
He is teasing you and may want your attention. Young men often do things that seem the opposite of what a girl thinks is flirting. Teasing you is one way they flirt.
some times flirting doesn't mean anything, but sometimes it does. depends on the case
It could be an innocent mistake, consider talking to him about it and asking him to back down. If he is a good friend this should resolve the problem. If he refuses you should consider getting better friends.
u look for proof ask one of the boys friend and ask or see if he is flirting with another girl.
means nothing unless u make it into something
If a boy is flirting with you but has a girlfriend, he may give you excessive compliments, try to spend time alone with you, or touch you inappropriately. However, it's essential to consider his actions in the context of his relationship with his girlfriend and communicate your boundaries clearly.
make it clear to her that you are only friends make comments like ' you and him make a could couple' pushing her towards someone else, showing that you prefer her as a friend
Well, that definitely could be a possibility! Sometimes teasing is a way of flirting, or they are genuinely arguing and in disagreement.
Well, frankly I don't think your friend is good friend if he is trying to take your girl. Maybe you should find another friend who will respect you.
Try flirting with her, if she likes you, then you're lucky, if not, then accept her as your friend
Girls will often laugh at a witty remark. Making a girl laugh is not flirting if you both understand it is not sexual. If you are just friends, there is no crime in making a girl laugh.