Sign up for the Socialite Life newsletter. A three-time weekly dose of divas, drag queens, hot male celebrities, models, & pop culture news. Get it in your inbox. Henry Cavill channeled Superman in real life when he saved the life of The Ministry of Ungentlemanly Warfare co-star Alex Pettyfer. The 33-year-old actor revealed that Cavill prevented him from drowning on the set of the film, thus saving his life. Pettyfer raved about the actor for his work ethic and teamwork before detailing the instance where he almost fell off a boat. “He saved me from falling off a boat,” the Magic Mike actor co…