A. Crikey, I have to say this one sounds like a monster. Do I think people like this ever change? No I don't. This man, with his at least two affairs (have you asked him how many? Could you trust him to answer honestly?) sounds like a compulsive philanderer. The thing about serial cheats is that they need someone to cheat on. Since his marriage ended, there is a vacancy for a Wronged One in his life, the job description for which really doesn't bear thinking about.
Currently acknowledged subspecies include: B. c. constrictor, B. c. orophias, B. c. imperator, B. c. occidentalis, B. c. ortonii, B. c. sabogae, B. c. amarali, B. c. nebulosa (Dominican boa, recently elevated to full species), and B. c. longicauda.
In fact many common boa constrictors do have a red tail, distinctly different in color than the rest of the body; however, the common name of red-tailed boa is also commonly applied to the South American boa constrictor, Boa constrictor constrictor, which typically has an even redder tail.