6. If you think you might be gay, dump your lady. Immediately.
If you are anything but 100 percent certain of your heterosexuality, please don't date me while you figure it out.
Hannah gets together with her ex-boyfriend Elijah (Andrew Rannells), whom she dated for two years during college, only to learn that he is gay. When pressed to learn more, he thanks her for helping him realize his sexual orientation, telling her that, "There's a handsomeness to you." Ouch.