7 People You Should Never Sleep With
It's natural to find co-workers attractive, especially if you spend many hours together. But think about how your work atmosphere could change for the worse, if you move this relationship into the bedroom.
Your Relative
Sex with a relative is always taboo unless the particular family member is a million times removed from your bloodline. But even then, it's a bit on the iffy side. There's the chance that any children that come of this union could face life with some kind of deformity. You also might encounter tension with other relatives because of your sexual relationship.
For many reasons, it's best to keep your familial relations on a platonic level. There are plenty of appealing people who don't share your DNA to choose from.