I thought this girl was playing me since she was talking to another guy as well since I asked her, she said it wasn't serious and then she asked why i asked, so i told her that i wasn't here to waste my time and if she likes someone else then whats the point. Was i right in what i told her?
If you feel that she likes someone else then you're probably better off without her, find someone who's only interested in you.
Yup, you're totally right. Tell people how you feel so there's no surprises. Be honest.
Did you ask her out or something? Or are you two mutually exclusive?