Let's face facts: the very first thing that draws a man towards any given woman is a sense of physical attraction.
But other factors such as personality, sense of humor and intelligence are often much more important than looks in determining whether or not a relationship grows between the two people. But that initial phase, the very first step that a man takes towards falling in love, is based on a feeling of lustful attraction towards the woman in question.
The next step a man lakes when falling in love is the courtship phase.
The courtship phase is different than dating because it can be a much longer process. Courtship can last anywhere from a few days to a few years, depending on the man involved and the relationship. During courtship the man feels an intense, almost undeniable attraction to the woman both physically and emotionally. This state is what many people assume "being in love" really is, but for the man the courtship stage is only the beginning of true romantic love. The true test of his love will come after the honeymoon period of courtship has come to its inevitable end.
This is where a man's true feelings of love for his partner really solidify into a lifelong feeling of love.
After the courtship is over, there may well be a loss of physical attraction between the couple, and there will be inevitable chaffing of personalities due to long-term exposure. If, despite these things, the man's feelings of romantic love continue to grow and evolve, then he's truly fallen in love. Love that develops fully during this stage is what makes for real long-term relationships and leads to lasting happiness for a couple.