helping a Friend

A few weeks ago me and my friend were in the cafeteria having lunch we were both talking and watching funny videos then I realized that my friend wasn't eating so I asked him where is your lunch he just said I'm not hungry so I didn' ask him anything else. A few minutes later his belly made these noises so I asked him if he's sure he's not hungry he said I am but I forgot my lunch at home so I offered him some of my lunch he said no. So I went to the canteen and got him a chocolate muffin and a juice. He was so thankful. He asked me when should I pay you back I was about to say tomorrow but then I decided to say never.