Is it foolish to be silent? That is my question and what do you think about that?

My answer is that it depends on the occasion. And your friend is correct. She hasn't done anything wrong even with her words so she will never feel guilty and that boy will be guilty when he understand the things.

I hate this kind of situations where one cheats. I we tell someone that we love them, we should have the courage to act accordingly to that words whatever happens. As sometimes it is just three words to us but it will be the whole life to someone🥺