<human>: Can you give me the gist of the text in a nutshell?

I work as a nanny with the most amazing little girl in the world, and I have a gigantic, nasty crush on her dad. I mean, I'm totally obsessed. I only see him a couple times a week, tops, but I have been letting myself fantasize about being with him waaaaay more than I should. I mean, I probably dream about him once every two weeks, minimum, and I really need to get over it. He's married, the father of the best kid I'd ever worked with, and keeping my job is my number one priority. 

I'm just gonna state that I am definitely in my physical prime, and I'm pretty cute and whatever, but I still don't know if someone like him could be remotely interested in someone as young (and admittedly silly) as I am. And despite of all this, I have been nothing but professional with him, and maybe a bit nervous, and he's flirted with me in the past, but never come on to me.  Having all encompassing and impractical crushes is totally not my style. So, I have a couple questions: 

- Do men in their late 30's/early 40's ever take women in their early 20's seriously, as romantic or sexual partners? This is a general question, I know this guy is extremely unattainable. 

- If he flirts with me, is he probably just fucking with me? 

- Most importantly, how do I get over this ultra mega crush?
<bot>: I have a crush bordering on obsession with a man 20 years older than me, who is my married boss, and I really need to not have a crush anymore.