Wherever did people get the idea that heterosexual women have to choose between feminism and a relationship? The idea that it is inadvisable for a woman to admit to feminism and unfair for feminists to expect women to give up their chance of being laid? Regardless, my rather unsympathetic reaction to all this is if a guy won’t have a relationship with someone because she’s a feminist, she probably shouldn’t have a relationship with him.
This isn’t to say that women can’t choose their own relationships and lives. Women don’t need to be babied in relationships, and the focus shouldn’t be on them and their bad choices (the fact that you’re a woman automatically means no matter what you’ve done, you’ve made a bad choice in someone’s eyes). The focus should be on the crappy men who do stupid shit when a woman is a feminist. If a man can’t accept a woman who asserts she’s equal to him then he needs to grow up.
Also, on a personal note, feminism is a cause worth sacrificing for. One of the reasons it is a worthy cause is because it doesn’t demand those sacrifices.