I'm not exactly sure who I'd want as my video game father and mother. I simply find it hard to pick a mother that I, as a son, will not be attracted to in any form. Many female heroines are physically endowed with amazing figures, while others are simply insanely strong or heavily equipped. I would hate to see what would happen to me should I ever get on her bad side as her son, lol.
Though if I had to choose good couplings, here's my picks:
1) Chun Li (Street Fighters) x Ryu (Street Fighters)
2) Tidus (FF10) x Yuna (FF10) - I know they actually get together in the game, but they are a favorite coupling of mine.
3) Rikku (FF10) x Wakka (FF10)
4) Lulu (FF10) x Wakka (FF10) - Yes, Wakka shows up twice. Either one is fine with me since he gets one of the two anyway.
5) Fran (FF12) x Balthier (FF12)
I guess I'll add some more in my spare time.