When you marry someone, you are not just marrying them, you are marrying their entire family. This is not just a saying, this is something anyone who is in a serious relationship should keep in mind. If one doesn't have a good relationship with their partner's family, then one should get ready for some real challenges. That being said, the responsibility of maintaining a good relationship with the family lies both with the partner and the family, and both should be on their best behavior with e…