I will never understand why someone would ever want to cheat on their significant other.
You have someone who cares for you, who loves you, and expects nothing more than to have those feelings reciprocated in an exclusive relationship.
You are choosing to break someone’s trust in you, to willingly break their heart, and for what?
You can do the same things that you’re doing with the other person with your significant other.
Why be in a relationship if you’re going to throw all of that away for some temporary lust?