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

Basically, I noticed a red spot on the side of her neck, in the "hickey spot", that I could swear looks JUST like a hickey. She claims that its just a grease burn from cooking at her work (Arby's).

I'm not sure if I should just be taking her at her word for it, as the circumstances just seem a little odd considering how the alleged grease burn looks and where it's located. I've had trouble trusting her and taking her at her word for a while now because of several instances where she's lied to me, and so now I'm not sure whether to trust her over this. I don't want to be the crazy unreasonable person here, but the alleged grease burn really does look like a hickey on my own opinion, and I just don't know how to handle the situation. Could it be possible that it really is just a grease burn? Am I just overreacting over a coincidence that happened?
<bot>: Girlfriend has a peculiar reddish mark on side of her neck, claims it's a grease burn, I'm afraid it might be a hickey