Sometimes people get involved in a relationship that turns out not to be as fulfilling or as functional as they might have hoped, but they stay in it anyway, trying to convince themselves -- and their family, their friends and everyone else around -- that it's working fine, that it's even a dream come true. But everyone knows it's not, including that person, deep down in their soul. Your partner runs the risk of being that person in this relationship, clinging to false hope and misplaced idealism instead of accepting the reality of the situation.
They have some very well-defined ideals when it comes to the perfect love and what they're looking for in a mate. And being involved with you, they visit all those ideals on you, stubbornly wearing rose-colored glasses even if there's no reason or encouragement to do so. Sooner or later, the glasses are going to come off, and they realize that things aren't nearly as rosy as they've been trying to convince themselves. For you, this is a very uncomfortable experience. You're put up on a pedestal and held to a standard that you can't possibly live up to. You might try for a while to be the person your lover so obviously wants you to be, but soon it comes out that you two have two different agendas.