“Go with the flow and give him a breath mint.” These adorable little boys have some seriously great relationship advice. SUBSCRIBE to Cosmopolitan: Cosmopolitan is the best-selling young women’s magazine in the U.S., a bible for fun, fearless females that reaches more than 18 million readers a month. We deliver the latest news on men and love, sex, fashion and beauty, women’s health and self-improvement, and entertainment. Cosmopolitan Official Site: Cosmopolitan on FACEBOOK: Cosmopolitan on TWITTER: Cosmopolitan on GOOGLE+: Cosmopolitan…