Well, “usually” is indeed an adverb word that is too strong in this context.
I was extremely lucky. I met my SO in college and the wedding was indeed followed later (after I was graduated.). This may not be the norm, especially nowadays when people have more opportunity to meet people of potential love interest, and more importantly, people may move more frequently and tend to move farther away (and it seems it often takes longer to establish a career as compared to a couple of generations ago.)