when is flirting too much?

So this is something I always worry about when talking to a nice girl. I want to be charming, but I dont want to look like some kind of horn dog or creep.

you can usually tell by body language, arms crossed, turned away from you,etc. If she looks uncomfortable, not looking at you, or not really answering you/giving you short answers that don't really encourage more conversation, then they're not interested.

if she's around her friends around around and she does "the look" its hard to explain but you'll know it if you see it. its almost as if they're saying "help me" to them. when you notice this its time to back off.

Yeah I know whst you mesn, a girl I knew In high school did that to me once. A girl who worked in a book store was really into anime told me about the first bleach movie coming to theaters and she was going so I told her id get tickets and meet her there. When I got there she had a group with her and they Iignored me when I called out to them and ended up giving the other ticket to my dad who has a thing for miyazaki movies and figured he might enjoy it which we did anyway. Since then I see her all the time moving from store to store selling anime, manga, games, ect. But shes very shallow. Sad thing is shes the only one in my area hosting anime clubs, but for her rotten little friends. I stopped going after it got annoying. The reason I went in the first place was to make friends.

You can tell, I don't flirt but people say I do. So for me its more of a natural thing. Dont be pushy, if she looks at her phone alot or checks for the time, if she has her arms crossed, If she keeps looking around, if she doesnt keep up the conversation. I usually keep the conversation short and leave. Just plant the seed and the next time I see her I would say hello and talk a little bit more and maybe ask her number if I'm still interested. I just joke around with the girl or lightly tease her. No need to be tense or nervous about it shes just another person. Theres billions of them lol Good luck to all of those out there xD

Lol well pace yourself then. Eye contact is key if you can train your eyes to pick up small changes in the person of interest you can know when to shift the conversation or scene.