Expectation management is key to helping a relationship with a metamour get off to a strong start. Don't expect that because you're both into the same person, the two of you will feel some kind of instant bond. Don't expect immediate intimacy, don't expect to just "get" each other right away, and don't expect instant "family." Your shared partner likes you both because you're different, after all, and those differences might make you click, or they may make you feel alien to each other. Accept whatever happens. When meeting any new person, you're best to meet without agenda or expectation.
