Vegeta overhears this and is understandably angry, telling Goku to let him "kiss your woman," only for Goku to argue that Chi Chi isn't as pretty as Bulma. It's even worse in Japan, as Goku ...
Goku's wife may seem angry and melodramatic at times (even if her exasperation with her battle-hungry husband is quite justified), but she was completely different at the start of the series.