Watch How to Lose a Guy in 10 Days (2003) HD Full Movie Free on SolarMovie. Watch How to Lose a Guy in 10 Days (2003) online free. Benjamin Barry is an advertising executive and ladies' man who, to win a big campaign, bets that he ...Benjamin Barry is an advertising executive and ladies' man who, to win a big campaign, bets that he can make a woman fall in love with him in 10 days.