cos the girlfriend doesn't like me pissing in it when she's cleaning her teeth

you don't need 2 sinks, but it's nice to have. when you're both getting ready to go out, she can be shaving in one, while i put my make up on over the other

as maria says, it doesn't really matter if you have shower standing in a bath or a separate cubicle, so a keyhole bath would allow enough space to enjoy the convenience of 2 sinks. there is not enough room for 2 sinks, separate shower and full size bath, and i would prefer to have a big bath so that 2 people can easily get in, neither of which are short