The other posters here have given you some good insight. I would only like to add that sometimes people come into our life for a time and for that time there is great benefit. And then they go out of our lives.

Maybe it is time to make room for what is coming next. Maybe, later on down the line your friend will reach out to you and you'll rekindle the friendship.

But right now, you have a friend in 'Amber' who is telling you something important and is sticking with you through it. She is a great friend. Give 'Dylan' his space. Look up & around and see what new opportunities are out there for you.
Best of luck as you experience yet another of many growing pains.