<human>: Could you distill the essence of the text into 1-3 sentences?

Hello Reddit!

I just started working as a waitress at a restaurant last week. This is the first time I've been a waitress, so I had to learn everything from square one. I was assigned a trainer to get me through the first month, who would teach me the how-to for every aspect of the job, follow me around the store to see if I'm doing everything correctly, and help me if I need help. On day one, I met him. My first impressions of him were that he was tall and friendly. He had a charming smile. After exchanging "hello"s, we went into the store and began the training session. 

I asked stupid questions. I made many mistakes. I couldn't remember his instructions. I was being really useless. But from teaching me to answering my questions, he did everything gently, patiently, and with a smile. By the end of the day, I was already kind of impressed with him. 
Day two rolled by, and he was still patient and kind with my training. Then, sometime during the training, he asked if he had told me his age. I said, no, and he asked me to guess. I said that he looked around 25, and he told me that he was 23. We're only two years apart. Something about our age being close made it a lot easier for me to think of him as being closer. 

Yesterday was day three, and I can't get over how he makes me feel. Whatever I'm doing, I'm thinking about him.  I haven't felt this way about another person for a few years. And honestly, it's distracting. I can't sleep at night because my head and chest is filled with this stuffy, overwhelming, overtaking emotion. 
I don't want to fuck up the balance we have between the coworkers with this emotion. What's the right mindset to hold in order to respect everyone around me at the store? He;s my trainer, so I can't exactly avoid and hide away from him.
<bot>: I'm smitten by my coworker/trainer at work whom I've known for three days. How do I deal with this feeling?