Being in love is weird because you start operating in another rationality, specially if it's unrequited. You see connections in otherwise disconnected things and situations. For example, the person's name appears everywhere: you never read the credits after a movie, but suddenly you look at the screen and there it is; you enter a facebook post about nature fotos and the only photographer name you pay attention to is exactly the homonym; some passerby is interviewed on TV; some specialist is interviewed on TV. And it's not a common name!
Then you decide it's just coincidence, but you start following a new series and one of the main characters looks exactly like him, not only the looks, but also the behavior! You ask some neutral friend and she agrees.
It's better to simply give up understanding!