It is hard to digest that your partner is cheating on you. It feels uncomfortable and suffocating to hold on to such a thing. You will feel heavy from inside until you discuss things with your partner. So, the sooner you go heads-on, the better it will be. Remember, you should have some strong proof before you can raise your finger at them. Don’t go charging at him, instead sit down calmly and seek answers. Look for a suitable opportunity for having such conversations. You should not discuss this when your partner is working or has just returned from work. Be ready to counter your partner's explanation. Make sure your partner realizes the mistake and admits it.