How do i know if my kickboxing teacher likes me or really likes me?

I have noticed this woman in my kickboxing cl staring at me (i am a woman). But every time i looked at her she would turn away. This lady took over my cl and she has made some comments on how skinny i have gotten or say how jealous she was. I noticed her in staring at me with a huge smile and i wasn't to sure why. I would stare back totally confused. she has mentioned that she is waiting for her husband but after she spares with me she slaps me on my . i noticed that im the only one she does it to in cl. I am just totally confused and don't know what to do. So I asked her for her softball schedule so i could go watch her coach. She said that she was going to give me a copy. I noticed that she called me sweets when i said great cl and she can't get over how skinny i got... My friend says it's apparent that she likes me but in what way? I just thought if she really really liked me she would of asked me to hang out but she hasn't. I kinda have a crush on her but I don't know what to do or how to go about this.. Help!!