This match may never strike hard enough to light an eternal flame. There will always be sparks, though, and they'll keep trying to blaze it up into something bigger. With their vastly different personalities, the struggle could eventually just burn them out.
Both signs like to help people in need, and often end up in a "caretaker" role in relationships. They can come off as detached, although with Cancer it's all an act to cover up how sensitive they are. Both of them are part-rebel, part-teacher's pet. Friends are important to both Cancer and Aquarius, and they live to talk to people. They make great team captains, class presidents and teachers. These natural-born leaders know how to bring people together and get a group excited.