<human>: I am a cashier at a hardware store. Today, my immediate supervisor asked me to help her with some returns that needed to be brought to the back of the store.

After I finished taking the returns back, I reminded her that I needed to cover a break for one of my coworkers outside. She says, "Oh! I'm glad you remembered that. I had forgotten all about it."

As I'm walking away, she says, "You know, I don't care what they say about you, catjack. You're a pretty great guy." 

"What?" I replied, a little taken aback by her comment.

She immediately froze, as she realized the words that just came out of her mouth. "Nothing, nothing!" she back-pedaled. "Forget I said anything." 

*Fuck*.

I thought about trying to get some answers, but she seemed embarrassed, and there were a bunch of customers around, so I didn't feel like it was the right time to confront her.

I literally can't comprehend why anyone would talk shit about me. I am very helpful, I go out of my way to help anyone in the store, and I greet people with a smile. I can be a bit socially awkward sometimes, and I'm not the best looking guy. I'm a little pudgy, and I'm also pretty quiet at work, but that honestly shouldn't matter. I try to be nice to people, and I do my job. Isn't that enough? What criteria do I need to meet to be considered "normal" by these people? The only person I can be is myself, but apparently that's not good enough.

Can you condense the text into three sentences or less?
<bot>: Coworker slipped up and revealed that people have been talking behind my back, I have no idea what I could be doing to cause this.