Tyrese and Rev Run: modern day renaissance men who wear many hats. Among them--  musicians, minister, model and MTV personalities. Now? They are adding another notch on their belt as best-selling authors. Yup, that's right. The pair teamed up to pen the book "Manology: Secrets of Your Man's Mind Revealed," to help women understand the male mind.

The how-to help book recently passed erotic series "Fifty Shades of Grey" on Amazon. What prompted them to write the book together? They talked with Natasha Curry about their inspiration, their intentions and what they have planned next!