Jecht

The other day, I was reading through the characters battle quotes of Dissidia (PSP), namely the section with the ones said to specific characters.

When I passed through Jecht's, as expected of me, I focused mainly on the ones towards Kuja (I think I was actually seeing who didn't insult him among everyone, considering it's only a few characters). And then, after taking a good look at the quotes, I think Jecht is eitheir mistaken Kuja for a woman or judging him to be his boyfriend (the second option is actually scary and I hope that's not true). Because, look at them:

The first one seems something you'd say to your wife. Or a girl. In a more stereotypical way, I suppose. It can be that Jecht is admiring Kuja's looks and because of that doesn't feel confident in winning, which indicates a slight sight of flirt, or embarrassment, Idk.

The second one is Jecht literally judging Kuja as if he could be a substitute for his wife (ends up in rejection though). Like, wtf? Or he could literally be just expressing how Kuja talks about getting the things done and then doesn't get the things done (a reference to wanting to destroy the Master Crystal in FFIX and not doing so), I suppose.

Still, it was quite a shock, considering I see them as good friends. The type of friends that no longer call each other by the name, they refer to each other as a**holes. Yes, the friendly insulting kind. Weird, I know, but that's my mind in a nutshell.

This could, however, be a hidden reference to people believing Kuja is a female (I still don't understand why and I don't think I ever will) when they first see him, and there aren't many flirty, ladies man kind of character in Dissidia, being them more exclusively Zidane and Jecht. Since Zidane already knows Kuja (and they're brothers), that leaves Jecht to deal with the joke.

We all know the story of how Tidus was killed, since Sin attacked the day of the Jecht Memorial Cup (with the Zanarkand Abes of A-North vs, the Zanarkand Duggles of C-South), and that Tidus died before becoming a part of the Fayth. We also know that Tidus emerged from the Dream of the Fayth, due to the Unsent Ghost of Auron, who went to the Dream to pull Tidus out into the real world.

Now here is the confusing part that I don't understand:

Tidus said that his father Jecht went out to sea one day, but never returned to Zanarkand, and we know it to be the day that Jecht vanished to the real world to meet Braska and Auron. However, I don't really know how Jecht vanished from the past and reappeared in a post-apocalyptic Spira (set ten years before the events of the game), I mean, it just doesn't make any sense to me at all and I have read the Wikia Page of Jecht, but am still confused.

Here are a few questions:

1) Did Jecht time travel to the future somehow?

2) Who teleported Jecht to the future?

3) Why was Jecht chosen to be teleported to the future?

4) If Jecht wasn't dead at the time he vanished, then how did he appear in the future, let alone as a living person and not a fragment of the Dream of the Fayth (like his son Tidus ten years later)?

And,

5) If Sin was involved (if he did appear several years before Zanarkand was destroyed), how did Sin teleport Jecht to the future?

I have only just learned about Final Fantasy X-0, but that game might be out in the far future, so until then, I don't know how on earth Jecht appeared in the future of Spira.

I just don't know how he was chosen for the future, and I am hoping that Final Fantasy Fans can answer these confusing questions for me.