I think key thing is to realize that math is more than performing calculations and being a series of topics like algebra, geometry, calculus, statistics etc. to wade yourself through while in school. Mathematics encompasses so much more than that. At its heart, it is the science of pattern recognition. It is a language that underpins our understanding of all science. For instance, without the language of mathematics, we would have no real understanding of physics and hence no real understanding of how our Universe works. In so many other areas of science and life, the same can be said.
I would have to ask - is math fun for you? If you can use your imagination to show that how deep mathematics goes, you certainly have the capability of making it fun to learn for your friend.