1. Someone will always find out
Your partner may not know that day, week or even that month...but eventually someone out there will find out. Whether it gets to your partner or not, is another story. But it is stressful to have that over your back, especially if you want to keep your S.O.
2. You may regret it
Truth is, at the time it may have seemed like a good idea. But you may find yourself feeling very guilty about hurting your partner. You are your own worst enemy.
3. Karma is a B*tch
You may think that no one would ever cheat on you, or that things will go unpunished, but as it turns out, coincidentally there is a balance of energy. For some reason things may come back to you.