she came with her ex and stood right where i was sitting and started cuddling him and then subtly cheking out my reaction
This girl likes to play head games. Why do you want to waste your time with her? Do you really think pretty trumps personality?
she starts acting as she wants attention by talking loudly , laughing etc and looks at me when i am not looking may be to see if i am looking at her
This sounds a bit immature. If she liked you, she would walk up to you and tell you, not play childish games.
I have a long time interest in psychology, specializing in relationship dynamics for 30 years.
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