A guy who likes and encourages your romantic attention but sends mixed signals when it comes to whether he feels romantically towards you. The inverted fuckboy will communicate with you multiple times throughout the day, disclose very personal information to you, flirt non-stop, and openly talk about sex but he will NOT make a move to kiss or have sex with you. Unlike the regular fuckboy, the inverted fuckboy will not use you for your body, but for all the other perks of a romantic relationship. Both types of fuckboys, however, refuse to label their relationships or to commit to a romantic interest.
Girl 1: "He's driving me crazy; it's like we're in a relationship except that he never tries to sleep with me!"
Girl 2: "He sounds like the poster child for inverted fuckboys."