Fall in Friends

I wondered why the phrase, "fall in love" is used. I've come up with my own validated reasoning behind it. Falling in love is synonymous with when you "fall" into something or over something or "fall" down.
Think about it! When you usually fall it's unexpected, exhilarating, jolting, scary, can be life-changing, etc and that's everything LOVE is and more!
Falling in love is great, but I feel people should "fall" in friends FIRST! Become good friends, best friends; friends before lovers!
Being friends first could possible cause each of you less likely to hurt each other or be reckless with each others feelings and emotions.
What do you think?