<human>: Can you summarize the given text in a few sentences?

So, I recently started a summer internship at an engineering company. Today while visiting sites, my supervising engineer and I stopped for lunch at a panera bread co. For reference my supervising engineer is really cool and casual, but I still try to be fairly professional. While he was looking at the menu I went to place my order, but as I reached for my wallet IT WAS NOT THERE!

I couldn't just cancel my order and leave, or just not eat while he did, as I determined that would be really awkward. So I swallowed my pride and asked if he'd cover for me and I said I would pay him back, which he just kind of shrugged off but didn't decline.

But then things got even more awkward. When he went to pay he used a reward card and was told he was eligible for a free meal. When asked if he wanted to use that, he was like ehh but then accepted. Mine was the cheaper so what I ordered technically didn't cost him anything, but he could have used that free meal for his family at a later time.

So here's the question. Should I try to give him money for what my meal would have cost, or just ignore the subject? Again he is really cool didn't seem to care, I just want to do what's right while avoiding awkwardness. Thanks.
<bot>: went to casual lunch with boss w/ no money. He used a free meal for me. Do I owe him money?