If you’ve ever proclaimed that your love language is acts of service while staring directly at an overflowing trash can, you’ve turned a 1992 self-help book into leverage. And that’s not the point. That book is Gary Chapman’s The Five Love Languages, which sorted affection into five categories: physical touch, quality time, words of affirmation, acts of service, and gifts. The idea took off like wildfire, and it started getting applied to liter…