You are sure of everything, you can plan your future with confidence. I can't risk losing him. Love is the maturation of friendship. You must be friends before you can be lovers. Love means trust, you may fall into infatuation, but you never fall in love.
Infatuation lacks confidence.
When he's away you wonder if he's with another woman. Sometimes you even check to make sure. Love usually takes root slowly and grows with time. Infatuation leaps into bloom.