Cancer is a Water Sign, and therefore very in touch with the world of emotions. Some may even say that you're too sensitive - especially when it comes to interacting with others and especially with romantic partners.
You just feel the world's weight more than other signs, and this may play into your romantic relationships in both positive and negative ways. If you find that the world, or just your own feelings, become too much for you, it may be time to take a little break from the norm, either solo or together.
Your special someone will understand if you need a little time to rest and regenerate. When you come back together, sparks will fly!