<human>: Firstly, I'm willing to admit that the crush I have on this guy is completely irrational. 

We met through work.

We've probably spent a grand total of maybe 20 hours together in total.

But he makes me feel like I'm some incredibly dumb high school-aged girl; butterflies in my stomach, smiling idly to myself whenever I get something even so simple as an email from him.

Speaking of emails, I feel like the emails between him and me versus he, I and other people have completely different tones. As in, between just the two of us, he's totally willing to use far more informal phrases and things like smiling and winking emoticons (lame that I take this as a ~sign~, right?!).

And what makes it worse, is that he has 4 kids, one of which is only 8 years younger than I am.

I ask for advice because I feel like I'm reading in-between lines that aren't there and I am more than likely setting myself up for disappointment.

I've done really dumb things like googling "body language signs of attraction" and compared what's found on those lists against what kinds of ~body language~ he uses when I'm around (often I've found that what those lists say and what he does are the same). 

He always talks about his kids, but never a spouse. And today in the workplace, he put his youngest child on speakerphone and let me talk to them -- totally the highlight of MY day -- which in my mind is totally a sign that he at least likes me as a person, I guess.

Additionally, it's not like he's particularly shy about sharing aspects of his personal(ish) life with me, even in an environment as formal as the workplace.

I really just don't know. I definitely recognize that most of what I view as "signs" that maybe he fancies me as much as I fancy him are purely me projecting.

Any takers for advice?

Can you give me the gist of the text in a nutshell?
<bot>: Fairly older man with children never talks about a spouse and I feel like the way he holds himself around me and the way he talks to me implies that he's interested in me. Am I desperate?