Careful doing this as there's a risk of falling in love, as per this article: https://www.nytimes.com/2015/01/11/style/modern-love-to-fall...
I think love has to be a state that can be worked towards. We wonder the earth (with apps) looking for that perfect person, today. But did noone fall in love in the past, when you had to make do with people from your own village?
It is much easier to fall in love with people you have spent a lot of time with. Same thing with friendship, and I guess rivalry too. The keyword is "propinquity".
In a small village, it is natural, less so in a busy city where you meet with a lot of people, but don't really spend time with them.