Infatuation is not a real concept.
When people say, "you weren't really in love," or "you're not really in love," they have noo idea what they're talking about. I hear these conversations all the time. And the problem is... no one can ever say that. Sometimes I hear parents say this to their broken hearted daughters. Sometimes I hear girlfriends say it to their love sick best friends.
The thing is, love is an emotion right? And if you feel you love someone, then you do. When someone tells you what they feel, believe them. (This is branching off of Maya Angelou's quote, "When someone shows you who they are, believe them"). Because regardless of whether or not a relationship is bound to last, when people think they're in love, they are. Logic, probability, and time have nothing to do with it. At all. Emotions are beyond irrational.
To the people who feel they know you better than you know yourself...my favorite response to them is: And you just really have no idea .