Keep in mind that the early stages of relationships are typically infatuation, which isn't a bad thing as long as you understand infatuation.
It is the thing that hooks us and keeps us interested long enough to get to know someone.
The feelings are experienced in an exaggerated way, not that the person is exaggerating, but just that they feel everything more deeply than they typically would. So words like amazing, fascinating, wonderful, brilliant, etc, get tossed around. They truly mean it when they say it, because that is what they are feeling.
After you've gotten to know each other better, the infatuation dies down, and you view each other more realistically. This isn't a bad thing either. This is the time when you want to make a choice about whether to stick to this relationship and see if it is going to grow into something more. Sometimes it makes people disappointed because they want to live in the infatuated stage because it feels so good. However, you can't function well in life that way as a couple. There has to be a realistic view of each other and life in general in order for a lasting relationship to be healthy.
So, let them tell you that you're fascinating, and tell them how you feel, too. But don't get discouraged when fascinating turns into lovely and then likable and then responsible and loyal.