"Falling in love" is a feeling, much more akin to infatuation.
However, love is willing the good of the other as other and doing something to effect that. That's why traditional wedding vows aren't about "I will always feel this way about you" and instead "regardless of what life throws at us or my feelings, I will commit everything to this relationship". And it's done in front of something greater than either of you (e.g. God) and in front of your community.
When both parties do this, you end with a very healthy base for a marriage. If the base for your marriage is commitment to positive feelings, then it will fall apart.
However, love is willing the good of the other as other and doing something to effect that. That's why traditional wedding vows aren't about "I will always feel this way about you" and instead "regardless of what life throws at us or my feelings, I will commit everything to this relationship". And it's done in front of something greater than either of you (e.g. God) and in front of your community.
When both parties do this, you end with a very healthy base for a marriage. If the base for your marriage is commitment to positive feelings, then it will fall apart.