Questions: Guy's Behavior

Hello all 😊

I know this question probably seems odd, but I don’t have a lot of experience with men and I’m quite crap at reading signals. I also have no confidence because my first crush humiliated me. I’ve been seeing this guy at work and he caught my eye. He doesn’t work in my department. The interactions started with him smiling at me with prolonged eye contact (I have never really seen him talking to girls outside of his department except for one who works in the canteen)

It was always him who smiled first and it was me who looked away first

I eventually said hi to him and we have little conversations now and then

After I first said hi to him, he went though a phase of ignoring me and looking away from me when we were in the same area

When we talk, he stands quite close to me and his pupils are very dilated

When we are talking, his eyes are fixated on mine and he will glance at my lips quickly before going back to my eyes

He seems somewhat fidgety when we talk
Yesterday, he smiled and we said hi, and then when I started chatting to him properly, he smiled even more

I was walking to the canteen and my (prettier) friend was walking in front. He was walking towards us but he was fixated on me and didn’t even look at her

My friends say they have seen the way he looks at me, and to quote, “they would be upset if their boyfriend looked at another girl the same way”
I’ve noticed that when we are in the same vicinity, he will tidy his hair and check it in his phone camera

Sometimes we won’t have any interaction, just a few glances and that’s it

It’s just baby steps at the moment, but do you think he may find me attractive?

He keeps a certain amount of distance between me and him… he follows back all his other students on instagram but never followed me back (and I unfollowed him).

He flirts with me, gets mad when I like someone else, and expects me to only take guitar advice off him and his mate… he got a bit mad when I post on Facebook asking about guitar/musician related stuff and then he always texts to say stop looking on Facebook, other people don’t know what they’re talking about (true, but there’s some good advice on there too). Also during guitar lessons if I mentioned I had a lesson with someone else or took advice from someone else he’d say “you’ll only confuse yourself if you listen to other people’s advice, they don’t know the angle that we’re coming from” but then he will say something that completely contradicts “there’s no secret to learning guitar, it’s all just hard work and focus” but then he makes it out to be some wishy-washy thing like there’s an inner circle of musicians who know the secrets to playing… I feel like I’m going crazy. Then another guitarist explains something to me in such a simple way (his friend) and I understand it better. Is he trying to confuse me and undermine my confidence so I get more lessons with him?
Really strange because all his other students say how great he is and how he’s really helped them… I just get more confusion. I also said how I want to learn jazz standards etc. and he said that what I’m trying to learn is too complexed at the moment… but I can play it fine with a bit of practise? I dunno just feels like he’s scamming me and giving better teaching to other people… why would this be?

Do you think it’s weird my nice gentleman male boss (I’m female) was on lunch break passing by me and told me to do something work related? He was on break clocked out yet still wanted to boss me around? By the way he’s not my direct manager