ELI5: Explain Like I'm 5

Cuckoldry

Cuckoldry means when someone's romantic partner has sex with someone else while they are in a relationship. Imagine if you have a best friend and you invite him to play with your toys. But then, he starts playing with your favorite toy and doesn't let you play with it anymore. That's not fair, right? It's kind of like that with a romantic relationship, where you share everything with your partner, including your love and intimacy. But if your partner shares their love and intimacy with someone else too, it can make you feel sad, upset and hurt. It's important to remember that everyone deserves to be treated with love, respect, and loyalty in a relationship.