We're getting into the nature of free will, whether or not it exists at all. One of the hardest questions we've never really been able to answer, and quite possibly never will.
What if the well is merely looking into the infinite possibilities and determining who the true love is based on what will happen anyway? What if she also made a wish at another well at the same time, also for true love? What if she didn't exist at all, prior to his wish, and was created as his true love?
Okay skip that. I’m going to wish for an automated droid processing plant/factory with design files of every known class of ship- and the defiant, just to fuck with people.
Nah, it's magic, it can just make it so that the girl happened to be in the right place. Maybe it told the girl that she would find true love there and she decided to go.
Hmm. I think the first thing I’ll do, is give a few to Ukraine. You know. Just to demonstrate their total superiority. Maybe install kill switches so they have to come back for maintenance periodically. Like John Deere or something.
Then get all the “good” guys addicted to them so all the “bad” guys get fucked... Then hit the kill switches and demand everyone stops being fucking mean.
Maybe give them a few of the crappy battle droids from the prequels, so they’re autonomous and can’t necessarily be hacked.
If you wish for anything other than the end of deadly conflicts between humans or something similar then you need to think about your priorities real hard...