1. Someone else’s significant other.
You would think this goes without saying, but it’s surprising just how many people can’t seem to get this when in the heat of the moment and presented with a sexy little piece who just happens to be attached. The desire can be overwhelming, and you can even manage to convince yourself that their current SO isn’t good for them or isn’t what they really need but SPOILER ALERT: That isn’t your choice to make. If they are really unhappy in their relationship, it’s up to them to do the decent thing and get themselves out of it before they go frolicking through the genitalia forest with impunity. Nothing good comes from being the Other Person, and it makes you kind of a terrible person (no matter how good the sex is.)
2. Your roommate.
Do not, I repeat, do not, bone the roommate. I have witnessed
2. Your roommate.
Do not, I repeat, do not, bone the roommate. I have witnessed