Who's POV should I write the story from?

If it's a romance, female lead, main POV. Otherwise write out the climax first, whoever has the most to loose if the overall story goal isn't reached should be the main POV character. First person if you want more intimacy in your love story, but make sure to assign POV changes tol different scenes and chapters. Third person if you want to relay any information outside the protagonist and antagonist's POV.