Well, probably what happened was that laguna left, raine was sad, her comes caraway, and sweeps her off her feet. Then they get married and have a kid, Rinoa.
Now about at this same time Laguna is off in Winhill. So one night him and raine have some drinks, I mean she does work in a bar of some kind, and end up in bed, to be blunt. Then she gets pregnant, but no one knows except her and ellone.
But then ellone get taken away, and laguna goes out searching for her.
Meanwhile raine is pregnant and having squall, but he doesnt know that.
So while he is looking for Ellone, squall is born, and raine dies giving birth to him. So now squall is an orphan, hence going to the orphanage.
Now he meets back up with ellone at the orphange but they dont know they are related, cause everyone calls her sis, but he has an evan bigger attachment to her than everyone else, cause they are brother and sister. Then she is taken away and he waits for her.
Finally he is old enough to go to garden which he does, him siefer and quistis. Okay time goes by........................ then
Ellone starts sending him back as laguna, why so he can try to change lagunas actions so instead of going to look for her stays with raine, and figure out he has a son.
And along the way squall meets rinoa, who know the song eyes on me cause her mom probably sang it to her often. And so on. Its a really big circle.
Hope I didnt get off the subject.