Heteronormativity isn’t just about the presumption that everyone is heterosexual. The expectation that boys woo girls feeds into your mind the expectation that relationships are necessary for fulfilment, and you are less than if you are not having particular kinds of sex with a particular, and a particular kind of, person at particular intervals. It’s about what Lauren Berlant calls the love plot, in which love is produced as a generic text enabling society to interpret your life as following certain conventions. It’s not about what you want, it’s about what you’re supposed to want. You’re not encouraged to think about what you want in relationships, if anything, so much as you are encouraged to fit a script. Heteronormativity messes things up for everyone, straight people included.