It's just difficult sometimes to say "NO!" We work on our boundaries, but we always have a few people in our lives that make it difficult to tell them no.
Maybe we need to look at this in a different perspective?
Change the word from "no" to "I'll pass" or maybe "I will try one bite".
It doesn't offend the person and it won't kill your good eating behavior. No is a harsh word at times. Easing the blow will keep everyone a little happier!
Kindness never goes out of style....