I don't see the point of waiting until you're in love to enter a relationship.
A relationship is about growing and learning with one another, and along the way you fall in love with the quirks and the imperfections that your partner has.
You can't fall in love with someone you barely know, and if you don't know them and aren't in a relationship with them... what's going to make you commit to sticking around and focusing on just them long enough to fall in love, if you're unsure whether the other is invested enough in ya'll's future together?
I guess, the more you get to know someone. The more you fall in love with them. You don't necessarily have to be in a relationship for it to work though. Some people get into relationships just for them to fizzle out and fall out of love. Its a strange one.