>>544593897
>Goten and Bra
Kino because both are second children and uniting the Goku and Bejita bloodlines. Goten's GT girlfriend is a huge nothingburger. Cheating is Dragon Ball essence and Goten could just break up with her since they're only dating. It's implied Palace is at least Goten's second gf.
>Pan and Trunks
Similar to above with the addition of both of them spending an entire year together in a small spaceship in GT.
>Pan and Uub
Goku's grandaughter x his student. In fics where Goku trains both they'd get plenty of time to be with each other.
None of what you listed are really "pair the spares"

>>281578212
Huh. I thought those were bullets but you're right, they look too much like the fingers instead of actual bullets