Set clear boundaries with your sidepiece. Let them know what it is from the start, “this is us kicking it and nothing more.” O.k., we all know that there is a high chance that feelings will be caught in some fashion. So guess what? Your sidepiece should not know who your main thing is. Your sidepiece should not know who your family is. Your sidepiece should not know who all of your friends are. Your sidepiece may however know who your bestie is, because more than likely you and your bestie are doing dirt together and you tell your bestie everything. We need to eliminate the chance of your sidepiece catching feelings or being on some bullshit and wanting to wreck your home life. So by cutting off those avenues of communications you decrease your chances of getting caught. Oh yeah, keep your social media separate also. You shouldn’t be friends with your sidepiece on any social media platform.