Genuine Question For Those Who Opted For A Love Marriage.

Just happens ? No. Those who want to meet the right one, put themselves in situations where the right one may be met*. There are boys and girls on internet matchmaking sites, who want to meet, chat, go out to chai/chat, dinners, movies, etc.. with a short-listed prospects, and sort of mutually agree to take it (whatever "it" is) up to parents, to get them to bankroll a wedding.
Even in the old fashioned arranged marriage, a boy or a girl is first seen by a parent (some auntiji) or a set of parents who fall in love with that prospect as a s- or d- in-law. Once they fall in love, then they have the task to convince their child to fall in line with their love. That is how it is done.
The couple will go on to have a happy marriage, once they realize that marriage should not be the controlling factor in their life's happiness. Fortunately for us in the "east", a few luckly couples have the concept of a collective family foisted on them, so that there is no need to be attached to one's spouse at the hips all the time. In the west, couples harangue each other about various things from the vocabulary of family therapy, their life becomes a mess.

* Jim Corbett, the famous tiger hunter whose name is on a national park in India, said this:"when you want to hunt, you go where they come to drink"
.........heck... what is one more quote... here you go:
A large income is the best recipe for happiness I ever heard of. Jane Austen

When people are comfortable in their lives, they could make a mess of it only by insisting that they quit recognizing their comfort zones, and start feeling peevish about stupid things that don't matter at all.

 

if we may term the "love" an involuntary action of an emotion, there are no voluntary disclosures of true self mostly, just to impress one other.

marriage is a conscious voluntary action either out of love or arranged, then there would be discoveries of true self eventually, just to irritate or love one other.