This comment says more about you than them.
It never "just clicks". Meaningful relationships take work. In the modern adversarial dating environment, people are very wary of one another. Helping someone get to know you means getting them to let down their defenses. People are defensive and cautious these days for good reason, but often times it means meaningful connections with potential just don't happen out of apprehension.
These days, a lot of people want a readymade partner. All the tough work of becoming should be finished, there should be no personal growth left to do. If he/she doesn't already have everything you expect then time to look somewhere else. This is unhealthy. We have to rediscover how to look past the trinkets and into the human being we say we want something more with.
It's a pretty idea that people just click, that true love happens effortlessly, but it is not true, and it is a perfect fiction that destroys peoples reasonable expectations and destroys their lives in the process. How many people waited for perfection like that until they found themselves alone at 40? The only thing that just clicks is sexual attraction.
If someone believes someone else owes them romance for putting in effort they have no idea how to go about it, perhaps they never will. When you meet someone who you think is special and you decide to do the work of getting to know them and putting yourself out there for them, you do that knowing that they might not reciprocate, you accept failure as a possibility and you choose to take that risk and engage gracefully.