In the stories, I learned the word "rencard". Could that be used in this context?
On est tombés amoureux au premier rendez-vous. Accepted :)
Yes it was accepted, but I'm not sure why. The "on" form takes a singular verb, n'est pas?
It does but it is referencing more than one person here. It is being used as 'we' not 'one/someone'.
Nous sommes tombés amoureux au premier rencard - not accepted...