Girl's Behavior

Is my ex girlfriend teasing me?

I asked this before but I only got once response... A girl that i've dated, I haven't spoken to her because she didn't want me near her. I was in the gym with my friend. She randomly shows up. She walks around us makes a loop then walks out. My friend thinks she did that on purpose. She comes back into the gym to workout (note there are only about 3 other people in the gym) I catch her checking herself out, she does look pretty good. I can't lie. She would walk around in my radius about a 5 ft distance she would keep. She left the gym and went to the handball courts behind the gym (There is a glass door so you can see through to the courts) I glanced over there a few times and she would occasionally glance back at the gym, she caught me twice staring and each time she caught me she would bend down really low to make her ass stick out, then she'd look back to see if I was still looking. Why would she do this? Is there a motive?
Is my ex girlfriend teasing me?
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