What if you could give people lurve in real life?

I posed the question in this topic, but it was recommended that I start my own topic about it, so I am.

What if lurve was used in real life? Let’s say a person’s love would be instantly visible to anyone who wanted to see it, and anyone could give a person lurve. Exactly how this would be accomplished isn’t really important – what I’m interested in is what would happen to society as a result, and how the system would work. I can already think of a few problems that might arise, or some changes that might need to be made, but I’d like to hear your thoughts.