There are a lot of benefits to being in a relationship, but by far, one of the greatest is combining your streaming service logins to maximize access. Often, these logins won't even be your own, just logins that you've been grandfathered into over time through parents, friends, roommates—even exes with whom you're no longer even in contact. These login accesses are a matter of privilege, and one of the reasons why ending a relationship on good terms is a good idea in the modern dating landscape…