There's a reason that mother-in-law jokes exist: Because so many women take issue with the women who raised their men. Does that mean you should be honest about what you think of his mom, his father, his best friend or anyone else in his life? "Absolutely," says relationship coach Christy Little Jones. "Authenticity is one of the most important principles to obtaining a healthy and whole relationship.” Think about why people lie: Usually it’s to avoid an uncomfortable situation. But when you're comfortable, you can communicate without offending him, Jones says. There is a caveat, however: "It's not what you say, it's how you say it. Tell the truth with kindness and sensitivity." If he takes offense, explain to him that you're not trying to be hurtful, just honest with him.