Search Results: first thing a guy notices

Just to give a brief intro - I noticed this guy randomly gazing and smiling at me. We eventually made friends and he is usually the first one to initiate any interaction. He always looks/stares at me when he walks towards me/in my direction. He holds very strong eye contact when we talk, he smiles a lot when we talk and he teases me. Over the last few days, things have seemed very intense

- We were talking and he more or less admitted that he doesn’t like talking to people in general. I said, “well I must be pretty awesome if you’re talking to me.”, he said “yes, absolutely, you passed the test with flying colours” but did not look at me when he said that.

- We made eye contact and he looked away so quickly/aggressively that I thought his head would fall off

- Yesterday, he walked past me/in my direction three times and each time, I caught him staring at me

- Today, I caught him looking at me a few times and he smiled at me when I looked at him

- I told him that I like his shirt and he smiled, and he was still smiling to himself when I walked away

- he walked past my office and he doesn’t work anywhere near me. He was walking right against the wall and stared into the window at me as he walked past. When I teased him about it, he said “I was bored and going for a walk”, he didn’t have to come by my office.

- we were talking and he stared into my eyes for what seemed like ages

I’m wondering if this guy at work could have a crush on me or at the very least find me attractive. We work in completely different departments so there is minimal chance that our paths would cross in a work related context. Here is a list of his behaviours:

He is the one who started interacting with me. I noticed him gazing at me one day, our eyes met and he smiled at me.

The gazing/smiling happened a few times and he would always be the first to smile, I’d always be the first to look away.

When I eventually said hi to him, he smiled even more

He went through a phase of ignoring me and looking away when stood near me

When we do talk, he is smiling the whole time.
On our first proper interaction, he asked where I work and he said twice that he will have to come and “check it out”. I also told him what time I finish.

My friends said that they saw him walking past our office and staring into our office, ten minutes after I finished.

He acts somewhat awkward/fidgety when we walk and he sometimes backs away/walks away when we talk.

My work friends have noticed the way he looks at me. One saw us talking and she said “if my boyfriend looked like that at another girl, I’d be upset”

I was walking behind my friend and he was walking towards us. He was practically fixated on me and staring at me, then I looked at him, and he smiled at me.

I’ve never seen him talk to other random girls who aren’t in his department.

I’ve noticed that he will mess with his hair if I am nearby.

We sometimes make eye contact from afar.

Yesterday, as I turned around, I saw him looking away quickly which would indicate he was staring at me. And then as I was grabbing some cutlery, I looked up and he was staring at me.

There are some things I find confusing:

I’ve never caught him staring at me and looking at me loads
He never looks at my body, he just stares into my eyes and at my mouth
The whole walking away/backing away when I’m talking to him confuses me

What do you guys think?