One can agree with the author's argument that some people can fall in love at first sight.
Why the argument is believable
The argument of the author that some people can fall in love, at first sight, can be supported because many narrate this as their experience. Evidence to support this from the passage is "We talk excitedly about meeting someone and how we click or really hit it off."
The above experience shows that the events in the life of Romeo and Juliet are relatable as seen in the narration given. So, we can agree with the author's argument that some people can fall in love at first sight.