Oh the misogyny of 60's British Cinema. As a woman, you're either a "free spirit", meaning you have multiple sex partners and never request monogamy from any of them, and therefore your worth as a woman is lessened, or you're a "nag, a ball and chain". Meanwhile, the male "free spirits" are free to be the grown up children they are. "You may look like a bastard, but you don't fool me, you are a bastard." Accurate.