I actually used to have a thing about eating in front of ppl who weren't family. It made me nervous so much so that I had no desire to eat. Eating in front of guys was always out of the question (and my skinny friends). It was like I was thinking they were taking count of how much I was putting in my mouth and comparing it to the amount they had eaten. I sometimes still get weird like that, but not nearly as much. If I can be a hog in front of you and not be ashamed, it means I trust you.