So to be clear if I go to the restaurant only for food (which is what I was doing in the first place) that would be okay? I honestly really like their food and was bummed when I had to stop going.
So to be clear, as pointed out in several posts, your best choice is not to go to the restaurant at all if doing so will only exacerbate your anxiety, and it seems likely it will based on your prior posts. Surly there are similar Subway type restaurants or other restaurants in the area that have food of equal quality. You have had a lot of good advice in the posts above to fully walk away from this situation. Unfortunately, your continued posting suggests that's not going to happen, even though it is the best alternative.
Let it go.