playfully poke him back.. he is flirting with her
Yes :)
You might just be friends- it might not be flirting at all
Yes, absolutely, take it from someone whs taken the chance and asked, they like you as way more then a friend.
If you are involved with a person you catch flirting with someone else, you can confront them about it.
She could either be flirting or just giving you a nickname.
Quite probably.
If you like someone you can show him/her by flirting
It sounds like he's flirting with you if he's "playfully" kissing you, so I think he likes you.
Well it depends on the way she hits you. If she really is trying to hurt you or just playfully hitting you and laughing afterwards. If it's the second one then she's flirting with you. If it's the first one she's laughing because she's hurting you i guess.
No adult courtship would be conducted by hitting someone with a piece of paper, but children who are fooling around are easily capable of it.
It doesnt necesarrily mean she likes you but somewhat does. If she punches you shes got a problem, but if she just like fip your hair or something its like flirting.