Gene Simmons and Shannon Tweed (1/15)

Gene Simmons, the lead singer of Kiss and star of the reality TV series Gene Simmons Family Jewels, has been in a relationship with former adult star and 1982 Playmate of the Year Shannon Tweed for 33 years. They met at the Playboy Mansion in 1983. They were together for 28 years before finally getting married in 2011. They have two children, Nick and Sophie Alexandra. They claim the secret to a long relationship is mixing things up in the bedroom. “Keep having sex in different ways. Try to think of something new,” Shannon Tweed suggests. Gene Simmons is famous for his luck with the ladies, but Shannon denies the rumors that they have an open relationship. “Anything that you’ve ever seen… happened before 1983.”