In 1987, the Pet Shop Boys released ‘It’s A Sin’, detailing Neil Tennant’s relationship with his own sexuality and the sense of shame that came with it. It was years after the singer publicly came out. Thankfully, these days, singing about sex and love outside of heterosexual constraints isn’t a rarity. So many songs in the pop zeitgeist have gone beyond heteronormative boundaries, but still, it is often treated as something forbidden, experimental, taboo and something explicitly, solely sexual. Think Katy Perry’s ‘I Kissed A Girl’ or Demi Lovato’s ‘Cool for the Summer.’ Years & Years’ Olly Alexander joyfully takes…