Tyrese Gibson and Rev Run have decided to combine their masculine minds to write a book for men called "Manology." The unlikely partnership arose over an argument the two had over the nature of marriage. Rev Run believes that marriage is forever, while Tyrese believes it's ok to leave if the sexual attraction fades. Instead of things getting heated, the two decided to collaborate, giving advice for men everywhere on how to deal with their relationships.

The cover of the book just dropped so check that out above. The actual book itself comes out on February 5.

Source: hiphop-n-more.com