Just don't. It never stays hidden. I was in a healthy relationship for over an year. We loved each other way somuch and promised to not leave or cheat not matter how far or how long. I cheated. It didn't just ruin her life but mine too. Just step back and think about it. Nothing ever stays hidden. Don't cheat. I hope after reading this you love your partner a little more. And to my partner, idk of you left me or no. are with me or no, i miss you and i love you so much. please come back i really need you. I cant do this without you im sorry.