Suffering is almost as much of an art form as causing pain. It takes a level of perseverance that most people can’t manage. Syren De Mer, though, is not just some bitch off the street. She is an eye-popping beauty with a sexy submissive streak. She makes an offering of herself with every act of suffering, showing what it means to not just be into BDSM, but to really love it. Whether Syren is screaming, crying, or moaning, if she…