oh good, awkwardness

So, I was just walking around this computer lab pushing in chairs. You know, just doing my job.

I noticed one of my coworkers was sitting at a computer close to me, so I decided to make a simple comment.

"Working hard?"

This is where everything got very confusing. I was standing next to some random girl and across from my coworker.

My coworker quickly responded, "Oh, you know it."

The girl next me ALSO responded, "Yeah, something like that."

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I suppose I had a few options,

1. I could reply, "Sorry, madam, I wasn't speaking to you. However, I'm sure you are WORTH talking to. I am not trying to imply that you are somehow not worth my time. I'm not trying to say that at all. Although, just to alleviate any confusion, I was addressing my coworker seated across the desk."

2. Or, I could repond "Oh hey! That's awkward."

3. Or, I could say nothing at all and just look like some lame guy trying to hit on a girl in a computer lab.

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I chose to remain silent. Although, I'm not quite sure why.