No one ever said you had to be stuck with one waifu. Red Ginger is my 6* waifu and Tiger Lily my 5* waifu. I think it's fine for people to have more than one waifu if they want. Heck, maybe even have a waifu for each of the 4 types in FKG. Even in anime, Urd from Ah! My Goddess being my first anime waifu and Erza from Fairy Tail being my ultimate anime waifu. A threesome with those two beautiful ladies... good heavens! I'll definitely be in Heaven after that experience!