Don't know what to do with teacher's affection?

So I worry a little that my teacher's affection towards me might be getting out of control. On one hand, he's nice, stable and all that, but on the other, he also shows manly behaviour which I'm not sure he should be doing. Of course I'm not a child anymore and I have long accepted that men of all ages can find me attractive, but this particular dynamic still bugs me. I don't know if it's creepy or not to realize that your teacher finds you attractive.

It would be one thing if I didn't notice, but I do, and I even think that he makes it kind of noticeable. He stares at me, comes close to me, subtly tells me I look good. He does it in a non-creepy way and he is, as I said, a nice guy, but he's also a bit specific as a person and he makes it all pretty... intense somehow. Nevertheless, sometimes I'm actually worried. He seems to want me to rely on him and all that and in combination with all his staring, trying to befriend me, staying in contact and clearly having stalked my social media site, I find myself not knowing whether to trust him or not. It would be nice to have ab authority figure to look up to, but he makes it hard when he introduces romantic elements.

I do notice that he always has to have my attention on him, I feel like he always wants to look good in front of me. Both physically and as a person.
The attention makes me a bit insecure, actually. I've never been one to flaunt my assets but now at 25, I've been thinking that I better wear what I want while I'm still effortlessly beautiful!!! So I do wear some skirts sometimes, nothing skimpy though, and especially not on purpose when he's around. But sometimes he sees me by accident and I feel like he stares intensely and it makes me self conscious and I start wondering if I should just wear a garbage can altogether for the rest of my life because this is so stupid. I'm told I'm naturally alluring and even though I don't try to seduce anyone, I feel bad about it. This is stupid.
Don't know what to do with teacher's affection?
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