What should I do now?

I asked this question about my teacher before but a lot has changed since then. We became closer, got to know each other more. After we found out that our houses were close, we started walking home together. Our conversations and everything that came with it made me happy for a while, but now I'm not sure. I like the gestures when we walk on the road, the way he grabs my waist and guides me, especially at first I felt like I was in a dream. I wanted to believe that being friends like that would be enough for me, but I had a really bad feeling inside and I still have it. When I realized that I really needed help, I told about this to a old teacher that I trust dearly. She's more like a mother to me to be honest and I know I can rely on her without a doubt. She only knew that I liked someone older than me, but now she knows the whole story. Talking to her helped me see this situation from an adult's perspective and I think I know what's bothering me so much about him. I lied to my family and friends to spend time with him and he didn't take any responsibility while I put myself in this situation. No one knows we are that close and I went along with it without questioning his effort to hide it, but that's not how it's supposed to be, is it? He hardly ever says hi to me in public, he doesn't talk to me, but that's not how he treats me when we're alone. I've been ignoring this fact for a long time but like I said, after this conversation I realized that this is what bothers me. If he just spends time with his student, he should not be afraid to say so. He's been protective of me, giving me compliments, telling me how much he enjoys spending time with me, etc. The other night when we were walking he said that maybe next year when I go to college we could end up in the same city. He is also getting ready to do his PhD so we talked about how it would be if we were together in a different city. My teacher with whom I talked about this thinks that his behavior is not sincere
What should I do now?
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