Enamorarse
It is when you start to be attracted to someone and all the nonsense they do is hilarious to you: you applaud everything they do and believe that you cannot be happy or complete if you are not near them.
The same as being hooked, getting obsessed, or acting pathetic. It is definitely what happened to you in school with that guy or girl who NEVER in their life even noticed you existed.
Automatically translated from Spanish