How to react if you see an ex?

i keep seeing her at my hangout spot, i don't know if she knows that is where i hang out. she always walks close to me. i talk to her when she passes by and she did this multiple times. we chat, smile, and hug each other.

she broke up with me in the past, but i keep limited communication with her. we are not in bad terms but not in good terms either.

she kept checking me out when i talk to random women but would look away as i can see from the corner of my eye. i asked her to hang out sometime but she brushed it off. what is her deal?

i want to get back with her but she needs to show some effort.
How to react if you see an ex?
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